70071147 has 6 divisors (see below), whose sum is σ = 101213892. Its totient is φ = 46714092.

The previous prime is 70071143. The next prime is 70071149. The reversal of 70071147 is 74117007.

It is not a de Polignac number, because 70071147 - 2² = 70071143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70071147.

It is not an unprimeable number, because it can be changed into a prime (70071143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3892833 + ... + 3892850.

It is an arithmetic number, because the mean of its divisors is an integer number (16868982).

Almost surely, 2^70071147 is an apocalyptic number.

70071147 is a deficient number, since it is larger than the sum of its proper divisors (31142745).

70071147 is a wasteful number, since it uses less digits than its factorization.

70071147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785689 (or 7785686 counting only the distinct ones).

The product of its (nonzero) digits is 1372, while the sum is 27.

The square root of 70071147 is about 8370.8510320039. The cubic root of 70071147 is about 412.2681098860.

The spelling of 70071147 in words is "seventy million, seventy-one thousand, one hundred forty-seven".