687907464 has 64 divisors (see below), whose sum is σ = 1852435200. Its totient is φ = 212175936.

The previous prime is 687907459. The next prime is 687907489. The reversal of 687907464 is 464709786.

It is a super-2 number, since 2×687907464² = 946433358053822592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2067 + ... + 37149.

It is an arithmetic number, because the mean of its divisors is an integer number (28944300).

Almost surely, 2^687907464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687907464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (926217600).

687907464 is an abundant number, since it is smaller than the sum of its proper divisors (1164527736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

687907464 is a wasteful number, since it uses less digits than its factorization.

687907464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35154 (or 35150 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 51.

The square root of 687907464 is about 26227.9900869281. The cubic root of 687907464 is about 882.7614118027.

The spelling of 687907464 in words is "six hundred eighty-seven million, nine hundred seven thousand, four hundred sixty-four".