65654864 has 40 divisors (see below), whose sum is σ = 141740928. Its totient is φ = 29204480.

The previous prime is 65654803. The next prime is 65654887. The reversal of 65654864 is 46845656.

It is a super-2 number, since 2×65654864² = 8621122333716992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4304 + ... + 12240.

Almost surely, 2^65654864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65654864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70870464).

65654864 is an abundant number, since it is smaller than the sum of its proper divisors (76086064).

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

65654864 is a wasteful number, since it uses less digits than its factorization.

65654864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8003 (or 7997 counting only the distinct ones).

The product of its digits is 691200, while the sum is 44.

The square root of 65654864 is about 8102.7689094531. The cubic root of 65654864 is about 403.4183375391.

The spelling of 65654864 in words is "sixty-five million, six hundred fifty-four thousand, eight hundred sixty-four".