70569920 has 56 divisors (see below), whose sum is σ = 170133264. Its totient is φ = 27877376.

The previous prime is 70569901. The next prime is 70569937. The reversal of 70569920 is 2996507.

It is a super-2 number, since 2×70569920² = 9960227217612800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 25232 + ... + 27888.

It is an arithmetic number, because the mean of its divisors is an integer number (3038094).

Almost surely, 2^70569920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70569920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85066632).

70569920 is an abundant number, since it is smaller than the sum of its proper divisors (99563344).

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

70569920 is a wasteful number, since it uses less digits than its factorization.

70569920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757 (or 2747 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 70569920 is about 8400.5904554382. The cubic root of 70569920 is about 413.2439857750.

The spelling of 70569920 in words is "seventy million, five hundred sixty-nine thousand, nine hundred twenty".