70144513 has 8 divisors (see below), whose sum is σ = 70891520. Its totient is φ = 69400800.

The previous prime is 70144507. The next prime is 70144517. The reversal of 70144513 is 31544107.

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

It is a cyclic number.

It is not a de Polignac number, because 70144513 - 2⁹ = 70144001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70144517) 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, 75868 + ... + 76786.

It is an arithmetic number, because the mean of its divisors is an integer number (8861440).

Almost surely, 2^70144513 is an apocalyptic number.

It is an amenable number.

70144513 is a deficient number, since it is larger than the sum of its proper divisors (747007).

70144513 is a wasteful number, since it uses less digits than its factorization.

70144513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 70144513 is about 8375.2321161864. The cubic root of 70144513 is about 412.4119442284.

The spelling of 70144513 in words is "seventy million, one hundred forty-four thousand, five hundred thirteen".