923680557 has 16 divisors (see below), whose sum is σ = 1412559360. Its totient is φ = 595922400.

The previous prime is 923680553. The next prime is 923680579. The reversal of 923680557 is 755086329.

It is a happy number.

923680557 is a `hidden beast` number, since 92 + 3 + 6 + 8 + 0 + 557 = 666.

It is not a de Polignac number, because 923680557 - 2² = 923680553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (923680553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550944 + ... + 552617.

It is an arithmetic number, because the mean of its divisors is an integer number (88284960).

Almost surely, 2^923680557 is an apocalyptic number.

It is an amenable number.

923680557 is a deficient number, since it is larger than the sum of its proper divisors (488878803).

923680557 is a wasteful number, since it uses less digits than its factorization.

923680557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103601 (or 1103595 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 923680557 is about 30392.1134013415. The cubic root of 923680557 is about 973.8840818638.

The spelling of 923680557 in words is "nine hundred twenty-three million, six hundred eighty thousand, five hundred fifty-seven".