70643472 has 40 divisors (see below), whose sum is σ = 183154944. Its totient is φ = 23462784.

The previous prime is 70643437. The next prime is 70643519. The reversal of 70643472 is 27434607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11553 + ... + 16575.

Almost surely, 2^70643472 is an apocalyptic number.

It is an amenable number.

70643472 is an abundant number, since it is smaller than the sum of its proper divisors (112511472).

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

70643472 is a wasteful number, since it uses less digits than its factorization.

70643472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5327 (or 5321 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 33.

The square root of 70643472 is about 8404.9671028506. The cubic root of 70643472 is about 413.3875047511.

The spelling of 70643472 in words is "seventy million, six hundred forty-three thousand, four hundred seventy-two".