65630790 has 32 divisors (see below), whose sum is σ = 175016160. Its totient is φ = 17501472.

The previous prime is 65630783. The next prime is 65630821. The reversal of 65630790 is 9703656.

It is a happy number.

65630790 is a `hidden beast` number, since 6 + 563 + 0 + 7 + 90 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121269 + ... + 121808.

It is an arithmetic number, because the mean of its divisors is an integer number (5469255).

Almost surely, 2^65630790 is an apocalyptic number.

65630790 is an abundant number, since it is smaller than the sum of its proper divisors (109385370).

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

65630790 is a wasteful number, since it uses less digits than its factorization.

65630790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243093 (or 243087 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 65630790 is about 8101.2832316862. The cubic root of 65630790 is about 403.3690236993.

The spelling of 65630790 in words is "sixty-five million, six hundred thirty thousand, seven hundred ninety".