65161790 has 16 divisors (see below), whose sum is σ = 117633600. Its totient is φ = 25988640.

The previous prime is 65161777. The next prime is 65161801. The reversal of 65161790 is 9716156.

It is a self number, because there is not a number n which added to its sum of digits gives 65161790.

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, 5846 + ... + 12825.

It is an arithmetic number, because the mean of its divisors is an integer number (7352100).

Almost surely, 2^65161790 is an apocalyptic number.

65161790 is a deficient number, since it is larger than the sum of its proper divisors (52471810).

65161790 is a wasteful number, since it uses less digits than its factorization.

65161790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19027.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 65161790 is about 8072.2853021929. The cubic root of 65161790 is about 402.4058959819.

The spelling of 65161790 in words is "sixty-five million, one hundred sixty-one thousand, seven hundred ninety".