65695531 has 16 divisors (see below), whose sum is σ = 76861440. Its totient is φ = 55486080.

The previous prime is 65695523. The next prime is 65695537. The reversal of 65695531 is 13559656.

It is a cyclic number.

It is not a de Polignac number, because 65695531 - 2³ = 65695523 is a prime.

It is a super-2 number, since 2×65695531² = 8631805586743922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65695537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12550 + ... + 16996.

It is an arithmetic number, because the mean of its divisors is an integer number (4803840).

Almost surely, 2^65695531 is an apocalyptic number.

65695531 is a deficient number, since it is larger than the sum of its proper divisors (11165909).

65695531 is a wasteful number, since it uses less digits than its factorization.

65695531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4554.

The product of its digits is 121500, while the sum is 40.

The square root of 65695531 is about 8105.2779717910. The cubic root of 65695531 is about 403.5016135597.

It can be divided in two parts, 6569 and 5531, that added together give a square (12100 = 110²).

The spelling of 65695531 in words is "sixty-five million, six hundred ninety-five thousand, five hundred thirty-one".