687292416 has 180 divisors, whose sum is σ = 2044660800. Its totient is φ = 222363648.

The previous prime is 687292399. The next prime is 687292423. The reversal of 687292416 is 614292786.

It is a happy number.

It is a super-2 number, since 2×687292416² = 944741730182234112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8699865 + ... + 8699943.

Almost surely, 2^687292416 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 687292416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1022330400).

687292416 is an abundant number, since it is smaller than the sum of its proper divisors (1357368384).

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

687292416 is an equidigital number, since it uses as much as digits as its factorization.

687292416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 143 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 687292416 is about 26216.2624338406. The cubic root of 687292416 is about 882.4982453346.

The spelling of 687292416 in words is "six hundred eighty-seven million, two hundred ninety-two thousand, four hundred sixteen".