70344921 has 16 divisors (see below), whose sum is σ = 97095680. Its totient is φ = 45254160.

The previous prime is 70344913. The next prime is 70344931. The reversal of 70344921 is 12944307.

It is a happy number.

It is not a de Polignac number, because 70344921 - 2³ = 70344913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70344931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39966 + ... + 41688.

It is an arithmetic number, because the mean of its divisors is an integer number (6068480).

Almost surely, 2^70344921 is an apocalyptic number.

It is an amenable number.

70344921 is a deficient number, since it is larger than the sum of its proper divisors (26750759).

70344921 is a wasteful number, since it uses less digits than its factorization.

70344921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 70344921 is about 8387.1879077555. The cubic root of 70344921 is about 412.8043344577.

The spelling of 70344921 in words is "seventy million, three hundred forty-four thousand, nine hundred twenty-one".