70925391 has 12 divisors (see below), whose sum is σ = 102965200. Its totient is φ = 47045988.

The previous prime is 70925383. The next prime is 70925419. The reversal of 70925391 is 19352907.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 70925391 - 2³ = 70925383 is a prime.

It is a super-2 number, since 2×70925391² = 10060822177005762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70925891) 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, 356310 + ... + 356508.

Almost surely, 2^70925391 is an apocalyptic number.

70925391 is a deficient number, since it is larger than the sum of its proper divisors (32039809).

70925391 is an frugal number, since it uses more digits than its factorization.

70925391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 70925391 is about 8421.7213798605. The cubic root of 70925391 is about 413.9366807873.

The spelling of 70925391 in words is "seventy million, nine hundred twenty-five thousand, three hundred ninety-one".