97782864 has 40 divisors (see below), whose sum is σ = 252980832. Its totient is φ = 32545920.

The previous prime is 97782863. The next prime is 97782899. The reversal of 97782864 is 46828779.

It is a super-2 number, since 2×97782864² = 19122976984084992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97782863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47619 + ... + 49629.

Almost surely, 2^97782864 is an apocalyptic number.

It is an amenable number.

97782864 is an abundant number, since it is smaller than the sum of its proper divisors (155197968).

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

97782864 is a wasteful number, since it uses less digits than its factorization.

97782864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035 (or 3029 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 51.

The square root of 97782864 is about 9888.5218308906. The cubic root of 97782864 is about 460.7028700323.

The spelling of 97782864 in words is "ninety-seven million, seven hundred eighty-two thousand, eight hundred sixty-four".