70815470 has 64 divisors (see below), whose sum is σ = 151234560. Its totient is φ = 23587200.

The previous prime is 70815469. The next prime is 70815491. The reversal of 70815470 is 7451807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64244 + ... + 65336.

It is an arithmetic number, because the mean of its divisors is an integer number (2363040).

Almost surely, 2^70815470 is an apocalyptic number.

70815470 is an abundant number, since it is smaller than the sum of its proper divisors (80419090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70815470 is a wasteful number, since it uses less digits than its factorization.

70815470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 70815470 is about 8415.1928082487. The cubic root of 70815470 is about 413.7227289188.

The spelling of 70815470 in words is "seventy million, eight hundred fifteen thousand, four hundred seventy".