70320855 has 32 divisors (see below), whose sum is σ = 124593408. Its totient is φ = 33580800.

The previous prime is 70320847. The next prime is 70320889. The reversal of 70320855 is 55802307.

It is a happy number.

It is not a de Polignac number, because 70320855 - 2³ = 70320847 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 7875 + ... + 14235.

It is an arithmetic number, because the mean of its divisors is an integer number (3893544).

Almost surely, 2^70320855 is an apocalyptic number.

70320855 is a deficient number, since it is larger than the sum of its proper divisors (54272553).

70320855 is a wasteful number, since it uses less digits than its factorization.

70320855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6447.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 70320855 is about 8385.7530967707. The cubic root of 70320855 is about 412.7572536730.

The spelling of 70320855 in words is "seventy million, three hundred twenty thousand, eight hundred fifty-five".