65161910 has 32 divisors (see below), whose sum is σ = 130380192. Its totient is φ = 23246080.

The previous prime is 65161909. The next prime is 65161913. The reversal of 65161910 is 1916156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65161913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242 + ... + 11418.

It is an arithmetic number, because the mean of its divisors is an integer number (4074381).

Almost surely, 2^65161910 is an apocalyptic number.

65161910 is an abundant number, since it is smaller than the sum of its proper divisors (65218282).

65161910 is a wasteful number, since it uses less digits than its factorization.

65161910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11248.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 65161910 is about 8072.2927350289. The cubic root of 65161910 is about 402.4061430013.

The spelling of 65161910 in words is "sixty-five million, one hundred sixty-one thousand, nine hundred ten".