70564391 has 8 divisors (see below), whose sum is σ = 73807200. Its totient is φ = 67336192.

The previous prime is 70564381. The next prime is 70564409. The reversal of 70564391 is 19346507.

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 70564391 - 2²⁶ = 3455527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70564381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6911 + ... + 13743.

It is an arithmetic number, because the mean of its divisors is an integer number (9225900).

Almost surely, 2^70564391 is an apocalyptic number.

70564391 is a deficient number, since it is larger than the sum of its proper divisors (3242809).

70564391 is a wasteful number, since it uses less digits than its factorization.

70564391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7305.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 70564391 is about 8400.2613649814. The cubic root of 70564391 is about 413.2331932368.

The spelling of 70564391 in words is "seventy million, five hundred sixty-four thousand, three hundred ninety-one".