70071565 has 16 divisors (see below), whose sum is σ = 86068656. Its totient is φ = 54745600.

The previous prime is 70071557. The next prime is 70071611. The reversal of 70071565 is 56517007.

It can be written as a sum of positive squares in 8 ways, for example, as 2601769 + 67469796 = 1613^2 + 8214^2 .

It is not a de Polignac number, because 70071565 - 2³ = 70071557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73995 + ... + 74935.

It is an arithmetic number, because the mean of its divisors is an integer number (5379291).

Almost surely, 2^70071565 is an apocalyptic number.

It is an amenable number.

70071565 is a deficient number, since it is larger than the sum of its proper divisors (15997091).

70071565 is a wasteful number, since it uses less digits than its factorization.

70071565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 70071565 is about 8370.8759995594. The cubic root of 70071565 is about 412.2689296610.

The spelling of 70071565 in words is "seventy million, seventy-one thousand, five hundred sixty-five".