69312961 has 16 divisors (see below), whose sum is σ = 76982400. Its totient is φ = 62073088.

The previous prime is 69312949. The next prime is 69312973. The reversal of 69312961 is 16921396.

69312961 is nontrivially palindromic in base 9.

It is an interprime number because it is at equal distance from previous prime (69312949) and next prime (69312973).

It is a cyclic number.

It is not a de Polignac number, because 69312961 - 2²⁵ = 35758529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69312961.

It is not an unprimeable number, because it can be changed into a prime (69310961) 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, 104850 + ... + 105508.

It is an arithmetic number, because the mean of its divisors is an integer number (4811400).

Almost surely, 2^69312961 is an apocalyptic number.

It is an amenable number.

69312961 is a deficient number, since it is larger than the sum of its proper divisors (7669439).

69312961 is a wasteful number, since it uses less digits than its factorization.

69312961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its digits is 17496, while the sum is 37.

The square root of 69312961 is about 8325.4405889418. The cubic root of 69312961 is about 410.7757689819.

The spelling of 69312961 in words is "sixty-nine million, three hundred twelve thousand, nine hundred sixty-one".