689877632 has 32 divisors (see below), whose sum is σ = 1376918400. Its totient is φ = 344298240.

The previous prime is 689877613. The next prime is 689877637. The reversal of 689877632 is 236778986.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×689877632² = 951862294267854848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (689877637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68369 + ... + 77807.

It is an arithmetic number, because the mean of its divisors is an integer number (43028700).

Almost surely, 2^689877632 is an apocalyptic number.

It is an amenable number.

689877632 is a deficient number, since it is larger than the sum of its proper divisors (687040768).

689877632 is an equidigital number, since it uses as much as digits as its factorization.

689877632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10024 (or 10012 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 56.

The square root of 689877632 is about 26265.5217347762. The cubic root of 689877632 is about 883.6033518731.

The spelling of 689877632 in words is "six hundred eighty-nine million, eight hundred seventy-seven thousand, six hundred thirty-two".