70572913 has 8 divisors (see below), whose sum is σ = 72196520. Its totient is φ = 68964480.

The previous prime is 70572911. The next prime is 70572919. The reversal of 70572913 is 31927507.

It can be written as a sum of positive squares in 4 ways, for example, as 3873024 + 66699889 = 1968^2 + 8167^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70572913 - 2¹ = 70572911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70572911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5893 + ... + 13261.

It is an arithmetic number, because the mean of its divisors is an integer number (9024565).

Almost surely, 2^70572913 is an apocalyptic number.

It is an amenable number.

70572913 is a deficient number, since it is larger than the sum of its proper divisors (1623607).

70572913 is a wasteful number, since it uses less digits than its factorization.

70572913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7587.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 70572913 is about 8400.7685957893. The cubic root of 70572913 is about 413.2498278380.

The spelling of 70572913 in words is "seventy million, five hundred seventy-two thousand, nine hundred thirteen".