70421568 has 112 divisors (see below), whose sum is σ = 214969344. Its totient is φ = 19929600.

The previous prime is 70421551. The next prime is 70421579. The reversal of 70421568 is 86512407.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-3 number, since 3×70421568³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 202771 + ... + 203117.

Almost surely, 2^70421568 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 70421568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107484672).

70421568 is an abundant number, since it is smaller than the sum of its proper divisors (144547776).

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

70421568 is a wasteful number, since it uses less digits than its factorization.

70421568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 70421568 is about 8391.7559545068. The cubic root of 70421568 is about 412.9542089558.

The spelling of 70421568 in words is "seventy million, four hundred twenty-one thousand, five hundred sixty-eight".