65097515 has 32 divisors (see below), whose sum is σ = 95800320. Its totient is φ = 41468544.

The previous prime is 65097511. The next prime is 65097517. The reversal of 65097515 is 51579056.

It is a cyclic number.

It is not a de Polignac number, because 65097515 - 2² = 65097511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65097511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34322 + ... + 36168.

It is an arithmetic number, because the mean of its divisors is an integer number (2993760).

Almost surely, 2^65097515 is an apocalyptic number.

65097515 is a deficient number, since it is larger than the sum of its proper divisors (30702805).

65097515 is a wasteful number, since it uses less digits than its factorization.

65097515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931.

The product of its (nonzero) digits is 47250, while the sum is 38.

The square root of 65097515 is about 8068.3031053624. The cubic root of 65097515 is about 402.2735426101.

The spelling of 65097515 in words is "sixty-five million, ninety-seven thousand, five hundred fifteen".