70430815 has 32 divisors (see below), whose sum is σ = 109509120. Its totient is φ = 42228864.

The previous prime is 70430809. The next prime is 70430819. The reversal of 70430815 is 51803407.

It is a cyclic number.

It is not a de Polignac number, because 70430815 - 2⁷ = 70430687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70430819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4572 + ... + 12718.

It is an arithmetic number, because the mean of its divisors is an integer number (3422160).

Almost surely, 2^70430815 is an apocalyptic number.

70430815 is a deficient number, since it is larger than the sum of its proper divisors (39078305).

70430815 is a wasteful number, since it uses less digits than its factorization.

70430815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8191.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 70430815 is about 8392.3068938165. The cubic root of 70430815 is about 412.9722830608.

The spelling of 70430815 in words is "seventy million, four hundred thirty thousand, eight hundred fifteen".