670717805940 has 336 divisors, whose sum is σ = 2599137491328. Its totient is φ = 141513806592.

The previous prime is 670717805939. The next prime is 670717805941. The reversal of 670717805940 is 49508717076.

It is an interprime number because it is at equal distance from previous prime (670717805939) and next prime (670717805941).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670717805941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 1074019 + ... + 1579541.

It is an arithmetic number, because the mean of its divisors is an integer number (7735528248).

Almost surely, 2^670717805940 is an apocalyptic number.

670717805940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670717805940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1299568745664).

670717805940 is an abundant number, since it is smaller than the sum of its proper divisors (1928419685388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670717805940 is a wasteful number, since it uses less digits than its factorization.

670717805940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505570 (or 505553 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 54.

The spelling of 670717805940 in words is "six hundred seventy billion, seven hundred seventeen million, eight hundred five thousand, nine hundred forty".