65996790 has 16 divisors (see below), whose sum is σ = 158392368. Its totient is φ = 17599136.

The previous prime is 65996767. The next prime is 65996797. The reversal of 65996790 is 9769956.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65996797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1099917 + ... + 1099976.

It is an arithmetic number, because the mean of its divisors is an integer number (9899523).

Almost surely, 2^65996790 is an apocalyptic number.

65996790 is an abundant number, since it is smaller than the sum of its proper divisors (92395578).

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

65996790 is a wasteful number, since it uses less digits than its factorization.

65996790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199903.

The product of its (nonzero) digits is 918540, while the sum is 51.

The square root of 65996790 is about 8123.8408403907. The cubic root of 65996790 is about 404.1174502487.

The spelling of 65996790 in words is "sixty-five million, nine hundred ninety-six thousand, seven hundred ninety".