70144645 has 16 divisors (see below), whose sum is σ = 87530688. Its totient is φ = 53919360.

The previous prime is 70144639. The next prime is 70144667. The reversal of 70144645 is 54644107.

It is not a de Polignac number, because 70144645 - 2⁷ = 70144517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 11182 + ... + 16288.

It is an arithmetic number, because the mean of its divisors is an integer number (5470668).

Almost surely, 2^70144645 is an apocalyptic number.

It is an amenable number.

70144645 is a deficient number, since it is larger than the sum of its proper divisors (17386043).

70144645 is a wasteful number, since it uses less digits than its factorization.

70144645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5220.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 70144645 is about 8375.2399965613. The cubic root of 70144645 is about 412.4122029245.

The spelling of 70144645 in words is "seventy million, one hundred forty-four thousand, six hundred forty-five".