65401968 has 40 divisors (see below), whose sum is σ = 172889728. Its totient is φ = 21292992.

The previous prime is 65401951. The next prime is 65401979. The reversal of 65401968 is 86910456.

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, 13780 + ... + 17907.

Almost surely, 2^65401968 is an apocalyptic number.

It is an amenable number.

65401968 is an abundant number, since it is smaller than the sum of its proper divisors (107487760).

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

65401968 is a wasteful number, since it uses less digits than its factorization.

65401968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31741 (or 31735 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 65401968 is about 8087.1483231112. The cubic root of 65401968 is about 402.8996952903.

The spelling of 65401968 in words is "sixty-five million, four hundred one thousand, nine hundred sixty-eight".