97681966 has 24 divisors (see below), whose sum is σ = 162210384. Its totient is φ = 43961280.

The previous prime is 97681951. The next prime is 97681981. The reversal of 97681966 is 66918679.

It is an interprime number because it is at equal distance from previous prime (97681951) and next prime (97681981).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15271 + ... + 20701.

It is an arithmetic number, because the mean of its divisors is an integer number (6758766).

Almost surely, 2^97681966 is an apocalyptic number.

97681966 is a deficient number, since it is larger than the sum of its proper divisors (64528418).

97681966 is a wasteful number, since it uses less digits than its factorization.

97681966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5496 (or 5473 counting only the distinct ones).

The product of its digits is 979776, while the sum is 52.

The square root of 97681966 is about 9883.4187404966. The cubic root of 97681966 is about 460.5443555655.

The spelling of 97681966 in words is "ninety-seven million, six hundred eighty-one thousand, nine hundred sixty-six".