687230923 has 8 divisors (see below), whose sum is σ = 691168320. Its totient is φ = 683301960.

The previous prime is 687230917. The next prime is 687230959. The reversal of 687230923 is 329032786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-687230923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687230963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229828 + ... + 232798.

It is an arithmetic number, because the mean of its divisors is an integer number (86396040).

Almost surely, 2^687230923 is an apocalyptic number.

687230923 is a deficient number, since it is larger than the sum of its proper divisors (3937397).

687230923 is a wasteful number, since it uses less digits than its factorization.

687230923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 687230923 is about 26215.0896050347. The cubic root of 687230923 is about 882.4719251047.

The spelling of 687230923 in words is "six hundred eighty-seven million, two hundred thirty thousand, nine hundred twenty-three".