69440765 has 4 divisors (see below), whose sum is σ = 83328924. Its totient is φ = 55552608.

The previous prime is 69440741. The next prime is 69440773. The reversal of 69440765 is 56704496.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39476089 + 29964676 = 6283^2 + 5474^2 .

It is a cyclic number.

It is not a de Polignac number, because 69440765 - 2²⁴ = 52663549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6944072 + ... + 6944081.

It is an arithmetic number, because the mean of its divisors is an integer number (20832231).

Almost surely, 2^69440765 is an apocalyptic number.

It is an amenable number.

69440765 is a deficient number, since it is larger than the sum of its proper divisors (13888159).

69440765 is a wasteful number, since it uses less digits than its factorization.

69440765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13888158.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 69440765 is about 8333.1125637423. The cubic root of 69440765 is about 411.0280861613.

The spelling of 69440765 in words is "sixty-nine million, four hundred forty thousand, seven hundred sixty-five".