660594420 has 48 divisors (see below), whose sum is σ = 2055184320. Its totient is φ = 176158368.

The previous prime is 660594379. The next prime is 660594457. The reversal of 660594420 is 24495066.

660594420 is a `hidden beast` number, since 6 + 60 + 594 + 4 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611122 + ... + 612201.

It is an arithmetic number, because the mean of its divisors is an integer number (42816340).

Almost surely, 2^660594420 is an apocalyptic number.

660594420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

660594420 is an abundant number, since it is smaller than the sum of its proper divisors (1394589900).

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

660594420 is a wasteful number, since it uses less digits than its factorization.

660594420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223341 (or 1223333 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 660594420 is about 25702.0314372230. The cubic root of 660594420 is about 870.9200730024.

It can be divided in two parts, 6605 and 94420, that added together give a triangular number (101025 = T₄₄₉).

The spelling of 660594420 in words is "six hundred sixty million, five hundred ninety-four thousand, four hundred twenty".