97749664 has 24 divisors (see below), whose sum is σ = 196922880. Its totient is φ = 47737536.

The previous prime is 97749653. The next prime is 97749667. The reversal of 97749664 is 46694779.

It is a super-2 number, since 2×97749664² = 19109993624225792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97749667) 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, 34144 + ... + 36895.

It is an arithmetic number, because the mean of its divisors is an integer number (8205120).

Almost surely, 2^97749664 is an apocalyptic number.

It is an amenable number.

97749664 is an abundant number, since it is smaller than the sum of its proper divisors (99173216).

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

97749664 is a wasteful number, since it uses less digits than its factorization.

97749664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71092 (or 71084 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 52.

The square root of 97749664 is about 9886.8429743776. The cubic root of 97749664 is about 460.6507236539.

The spelling of 97749664 in words is "ninety-seven million, seven hundred forty-nine thousand, six hundred sixty-four".