70925591 has 4 divisors (see below), whose sum is σ = 77373384. Its totient is φ = 64477800.

The previous prime is 70925579. The next prime is 70925593. The reversal of 70925591 is 19552907.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70925591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70925593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3223880 + ... + 3223901.

It is an arithmetic number, because the mean of its divisors is an integer number (19343346).

Almost surely, 2^70925591 is an apocalyptic number.

70925591 is a deficient number, since it is larger than the sum of its proper divisors (6447793).

70925591 is a wasteful number, since it uses less digits than its factorization.

70925591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6447792.

The product of its (nonzero) digits is 28350, while the sum is 38.

The square root of 70925591 is about 8421.7332539092. The cubic root of 70925591 is about 413.9370698688.

The spelling of 70925591 in words is "seventy million, nine hundred twenty-five thousand, five hundred ninety-one".