70780506 has 16 divisors (see below), whose sum is σ = 141787584. Its totient is φ = 23555744.

The previous prime is 70780483. The next prime is 70780531. The reversal of 70780506 is 60508707.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5235 + ... + 12998.

It is an arithmetic number, because the mean of its divisors is an integer number (8861724).

Almost surely, 2^70780506 is an apocalyptic number.

70780506 is an abundant number, since it is smaller than the sum of its proper divisors (71007078).

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

70780506 is a wasteful number, since it uses less digits than its factorization.

70780506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18885.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 70780506 is about 8413.1151186704. The cubic root of 70780506 is about 413.6546280606.

The spelling of 70780506 in words is "seventy million, seven hundred eighty thousand, five hundred six".