70564220 has 12 divisors (see below), whose sum is σ = 148184904. Its totient is φ = 28225680.

The previous prime is 70564213. The next prime is 70564237. The reversal of 70564220 is 2246507.

It is a self number, because there is not a number n which added to its sum of digits gives 70564220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1764086 + ... + 1764125.

It is an arithmetic number, because the mean of its divisors is an integer number (12348742).

Almost surely, 2^70564220 is an apocalyptic number.

It is an amenable number.

70564220 is an abundant number, since it is smaller than the sum of its proper divisors (77620684).

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

70564220 is a wasteful number, since it uses less digits than its factorization.

70564220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3528220 (or 3528218 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 70564220 is about 8400.2511867205. The cubic root of 70564220 is about 413.2328594380.

The spelling of 70564220 in words is "seventy million, five hundred sixty-four thousand, two hundred twenty".