70331397 has 8 divisors (see below), whose sum is σ = 99291456. Its totient is φ = 44129472.

The previous prime is 70331389. The next prime is 70331423. The reversal of 70331397 is 79313307.

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

It is not a de Polignac number, because 70331397 - 2³ = 70331389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70331347) 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, 689473 + ... + 689574.

It is an arithmetic number, because the mean of its divisors is an integer number (12411432).

Almost surely, 2^70331397 is an apocalyptic number.

It is an amenable number.

70331397 is a deficient number, since it is larger than the sum of its proper divisors (28960059).

70331397 is a wasteful number, since it uses less digits than its factorization.

70331397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379067.

The product of its (nonzero) digits is 11907, while the sum is 33.

The square root of 70331397 is about 8386.3816393007. The cubic root of 70331397 is about 412.7778785149. Note that the first 3 decimals are identical.

The spelling of 70331397 in words is "seventy million, three hundred thirty-one thousand, three hundred ninety-seven".