70616565 has 12 divisors (see below), whose sum is σ = 122402124. Its totient is φ = 37662144.

The previous prime is 70616563. The next prime is 70616573. The reversal of 70616565 is 56561607.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40870449 + 29746116 = 6393^2 + 5454^2 .

It is not a de Polignac number, because 70616565 - 2¹ = 70616563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70616561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 784584 + ... + 784673.

It is an arithmetic number, because the mean of its divisors is an integer number (10200177).

Almost surely, 2^70616565 is an apocalyptic number.

It is an amenable number.

70616565 is a deficient number, since it is larger than the sum of its proper divisors (51785559).

70616565 is a wasteful number, since it uses less digits than its factorization.

70616565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569268 (or 1569265 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 70616565 is about 8403.3662897675. The cubic root of 70616565 is about 413.3350137953.

It can be divided in two parts, 706 and 16565, that added together give a palindrome (17271).

The spelling of 70616565 in words is "seventy million, six hundred sixteen thousand, five hundred sixty-five".