65140384 has 24 divisors (see below), whose sum is σ = 128599380. Its totient is φ = 32480256.

The previous prime is 65140381. The next prime is 65140391. The reversal of 65140384 is 48304156.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 63552784 + 1587600 = 7972^2 + 1260^2 .

It is not an unprimeable number, because it can be changed into a prime (65140381) 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, 9832 + ... + 15064.

Almost surely, 2^65140384 is an apocalyptic number.

It is an amenable number.

65140384 is a deficient number, since it is larger than the sum of its proper divisors (63458996).

65140384 is a wasteful number, since it uses less digits than its factorization.

65140384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5632 (or 5624 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 65140384 is about 8070.9592986212. The cubic root of 65140384 is about 402.3618269857.

The spelling of 65140384 in words is "sixty-five million, one hundred forty thousand, three hundred eighty-four".