70256163 has 4 divisors (see below), whose sum is σ = 93674888. Its totient is φ = 46837440.

The previous prime is 70256161. The next prime is 70256177. The reversal of 70256163 is 36165207.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 70256163 - 2¹ = 70256161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70256163.

It is not an unprimeable number, because it can be changed into a prime (70256161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11709358 + ... + 11709363.

It is an arithmetic number, because the mean of its divisors is an integer number (23418722).

Almost surely, 2^70256163 is an apocalyptic number.

70256163 is a deficient number, since it is larger than the sum of its proper divisors (23418725).

70256163 is a wasteful number, since it uses less digits than its factorization.

70256163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23418724.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 70256163 is about 8381.8949528135. The cubic root of 70256163 is about 412.6306421831.

It can be divided in two parts, 702 and 56163, that added together give a palindrome (56865).

The spelling of 70256163 in words is "seventy million, two hundred fifty-six thousand, one hundred sixty-three".