65061915 has 16 divisors (see below), whose sum is σ = 105566976. Its totient is φ = 34210400.

The previous prime is 65061911. The next prime is 65061923. The reversal of 65061915 is 51916056.

It is not a de Polignac number, because 65061915 - 2² = 65061911 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (65061911) 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, 29481 + ... + 31610.

It is an arithmetic number, because the mean of its divisors is an integer number (6597936).

Almost surely, 2^65061915 is an apocalyptic number.

65061915 is a deficient number, since it is larger than the sum of its proper divisors (40505061).

65061915 is a wasteful number, since it uses less digits than its factorization.

65061915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61170.

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 65061915 is about 8066.0966396393. The cubic root of 65061915 is about 402.2001985433.

The spelling of 65061915 in words is "sixty-five million, sixty-one thousand, nine hundred fifteen".