680397135 has 32 divisors (see below), whose sum is σ = 1189036800. Its totient is φ = 329491200.

The previous prime is 680397131. The next prime is 680397139. The reversal of 680397135 is 531793086.

It is an interprime number because it is at equal distance from previous prime (680397131) and next prime (680397139).

It is not a de Polignac number, because 680397135 - 2² = 680397131 is a prime.

It is a super-2 number, since 2×680397135² = 925880522632416450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680397131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171120 + ... + 175050.

It is an arithmetic number, because the mean of its divisors is an integer number (37157400).

Almost surely, 2^680397135 is an apocalyptic number.

680397135 is a deficient number, since it is larger than the sum of its proper divisors (508639665).

680397135 is a wasteful number, since it uses less digits than its factorization.

680397135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4999.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 680397135 is about 26084.4232253657. The cubic root of 680397135 is about 879.5370908174.

The spelling of 680397135 in words is "six hundred eighty million, three hundred ninety-seven thousand, one hundred thirty-five".