97531660 has 48 divisors (see below), whose sum is σ = 210978432. Its totient is φ = 37856000.

The previous prime is 97531649. The next prime is 97531663. The reversal of 97531660 is 6613579.

It is not an unprimeable number, because it can be changed into a prime (97531663) 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, 106605 + ... + 107515.

It is an arithmetic number, because the mean of its divisors is an integer number (4395384).

Almost surely, 2^97531660 is an apocalyptic number.

It is an amenable number.

97531660 is an abundant number, since it is smaller than the sum of its proper divisors (113446772).

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

97531660 is a wasteful number, since it uses less digits than its factorization.

97531660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074 (or 1072 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 97531660 is about 9875.8118653607. The cubic root of 97531660 is about 460.3080167678.

The spelling of 97531660 in words is "ninety-seven million, five hundred thirty-one thousand, six hundred sixty".