689416980 has 96 divisors (see below), whose sum is σ = 2335931136. Its totient is φ = 148310016.

The previous prime is 689416961. The next prime is 689416991. The reversal of 689416980 is 89614986.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41139 + ... + 55418.

It is an arithmetic number, because the mean of its divisors is an integer number (24332616).

Almost surely, 2^689416980 is an apocalyptic number.

689416980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

689416980 is an abundant number, since it is smaller than the sum of its proper divisors (1646514156).

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

689416980 is a wasteful number, since it uses less digits than its factorization.

689416980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96593 (or 96591 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 689416980 is about 26256.7511318518. The cubic root of 689416980 is about 883.4066385903.

The spelling of 689416980 in words is "six hundred eighty-nine million, four hundred sixteen thousand, nine hundred eighty".