70564390 has 32 divisors (see below), whose sum is σ = 139708800. Its totient is φ = 25497984.

The previous prime is 70564381. The next prime is 70564409. The reversal of 70564390 is 9346507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336 + ... + 11884.

It is an arithmetic number, because the mean of its divisors is an integer number (4365900).

Almost surely, 2^70564390 is an apocalyptic number.

70564390 is a deficient number, since it is larger than the sum of its proper divisors (69144410).

70564390 is a wasteful number, since it uses less digits than its factorization.

70564390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11616.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 70564390 is about 8400.2613054595. The cubic root of 70564390 is about 413.2331912848.

The spelling of 70564390 in words is "seventy million, five hundred sixty-four thousand, three hundred ninety".