65630784 has 28 divisors (see below), whose sum is σ = 173648624. Its totient is φ = 21876864.

The previous prime is 65630783. The next prime is 65630821. The reversal of 65630784 is 48703656.

It is not an unprimeable number, because it can be changed into a prime (65630783) 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, 170722 + ... + 171105.

Almost surely, 2^65630784 is an apocalyptic number.

65630784 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

65630784 is an abundant number, since it is smaller than the sum of its proper divisors (108017840).

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

65630784 is a wasteful number, since it uses less digits than its factorization.

65630784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341842 (or 341832 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 65630784 is about 8101.2828613745. The cubic root of 65630784 is about 403.3690114073.

The spelling of 65630784 in words is "sixty-five million, six hundred thirty thousand, seven hundred eighty-four".