680730933549 has 32 divisors (see below), whose sum is σ = 978114142720. Its totient is φ = 419729179968.

The previous prime is 680730933539. The next prime is 680730933569. The reversal of 680730933549 is 945339037086.

It is a happy number.

It is not a de Polignac number, because 680730933549 - 2⁸ = 680730933293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680730933539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4964262 + ... + 5099544.

It is an arithmetic number, because the mean of its divisors is an integer number (30566066960).

Almost surely, 2^680730933549 is an apocalyptic number.

It is an amenable number.

680730933549 is a deficient number, since it is larger than the sum of its proper divisors (297383209171).

680730933549 is a wasteful number, since it uses less digits than its factorization.

680730933549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137401.

The product of its (nonzero) digits is 14696640, while the sum is 57.

The spelling of 680730933549 in words is "six hundred eighty billion, seven hundred thirty million, nine hundred thirty-three thousand, five hundred forty-nine".