70991152 has 10 divisors (see below), whose sum is σ = 137545388. Its totient is φ = 35495568.

The previous prime is 70991149. The next prime is 70991171. The reversal of 70991152 is 25119907.

It is a super-3 number, since 3×70991152³ (a number of 25 digits) contains 333 as substring.

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 as a sum of consecutive naturals, namely, 2218458 + ... + 2218489.

Almost surely, 2^70991152 is an apocalyptic number.

It is an amenable number.

70991152 is a deficient number, since it is larger than the sum of its proper divisors (66554236).

70991152 is a wasteful number, since it uses less digits than its factorization.

70991152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4436955 (or 4436949 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 70991152 is about 8425.6247246124. The cubic root of 70991152 is about 414.0645733097.

The spelling of 70991152 in words is "seventy million, nine hundred ninety-one thousand, one hundred fifty-two".