65161288 has 16 divisors (see below), whose sum is σ = 123320880. Its totient is φ = 32275728.

The previous prime is 65161273. The next prime is 65161301. The reversal of 65161288 is 88216156.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37206 + ... + 38917.

It is an arithmetic number, because the mean of its divisors is an integer number (7707555).

Almost surely, 2^65161288 is an apocalyptic number.

It is an amenable number.

65161288 is a deficient number, since it is larger than the sum of its proper divisors (58159592).

65161288 is a wasteful number, since it uses less digits than its factorization.

65161288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76236 (or 76232 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The square root of 65161288 is about 8072.2542080883. The cubic root of 65161288 is about 402.4048626141.

The spelling of 65161288 in words is "sixty-five million, one hundred sixty-one thousand, two hundred eighty-eight".