616765923 has 6 divisors (see below), whose sum is σ = 890884124. Its totient is φ = 411177276.

The previous prime is 616765921. The next prime is 616765943. The reversal of 616765923 is 329567616.

616765923 is a `hidden beast` number, since 616 + 7 + 6 + 5 + 9 + 23 = 666.

It is not a de Polignac number, because 616765923 - 2¹ = 616765921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616765921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34264765 + ... + 34264782.

Almost surely, 2^616765923 is an apocalyptic number.

616765923 is a deficient number, since it is larger than the sum of its proper divisors (274118201).

616765923 is a wasteful number, since it uses less digits than its factorization.

616765923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68529553 (or 68529550 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 616765923 is about 24834.7724571819. The cubic root of 616765923 is about 851.2166765533.

The spelling of 616765923 in words is "six hundred sixteen million, seven hundred sixty-five thousand, nine hundred twenty-three".