687960023 has 2 divisors, whose sum is σ = 687960024. Its totient is φ = 687960022.

The previous prime is 687959989. The next prime is 687960059. The reversal of 687960023 is 320069786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 687960023 - 2¹² = 687955927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687960073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343980011 + 343980012.

It is an arithmetic number, because the mean of its divisors is an integer number (343980012).

Almost surely, 2^687960023 is an apocalyptic number.

687960023 is a deficient number, since it is larger than the sum of its proper divisors (1).

687960023 is an equidigital number, since it uses as much as digits as its factorization.

687960023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 687960023 is about 26228.9920317194. The cubic root of 687960023 is about 882.7838934483.

The spelling of 687960023 in words is "six hundred eighty-seven million, nine hundred sixty thousand, twenty-three".