688263612 has 48 divisors (see below), whose sum is σ = 1714944000. Its totient is φ = 214361280.

The previous prime is 688263577. The next prime is 688263647. The reversal of 688263612 is 216362886.

It is an interprime number because it is at equal distance from previous prime (688263577) and next prime (688263647).

It is a super-3 number, since 3×688263612³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

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, 21112 + ... + 42687.

It is an arithmetic number, because the mean of its divisors is an integer number (35728000).

Almost surely, 2^688263612 is an apocalyptic number.

688263612 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

688263612 is an abundant number, since it is smaller than the sum of its proper divisors (1026680388).

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

688263612 is a wasteful number, since it uses less digits than its factorization.

688263612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63866 (or 63864 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 688263612 is about 26234.7786725941. The cubic root of 688263612 is about 882.9137285442.

The spelling of 688263612 in words is "six hundred eighty-eight million, two hundred sixty-three thousand, six hundred twelve".