981526680 has 64 divisors (see below), whose sum is σ = 3271759200. Its totient is φ = 261740160.

The previous prime is 981526669. The next prime is 981526687. The reversal of 981526680 is 86625189.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981526687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453331 + ... + 455490.

Almost surely, 2^981526680 is an apocalyptic number.

981526680 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

981526680 is an abundant number, since it is smaller than the sum of its proper divisors (2290232520).

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

981526680 is a wasteful number, since it uses less digits than its factorization.

981526680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908841 (or 908831 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 981526680 is about 31329.3261976698. The cubic root of 981526680 is about 993.8039144832.

The spelling of 981526680 in words is "nine hundred eighty-one million, five hundred twenty-six thousand, six hundred eighty".