70321516 has 24 divisors (see below), whose sum is σ = 127370880. Its totient is φ = 33936000.

The previous prime is 70321487. The next prime is 70321523. The reversal of 70321516 is 61512307.

It is a super-2 number, since 2×70321516² = 9890231225076512, which contains 22 as substring.

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, 86520 + ... + 87328.

It is an arithmetic number, because the mean of its divisors is an integer number (5307120).

Almost surely, 2^70321516 is an apocalyptic number.

It is an amenable number.

70321516 is a deficient number, since it is larger than the sum of its proper divisors (57049364).

70321516 is a wasteful number, since it uses less digits than its factorization.

70321516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 70321516 is about 8385.7925087615. The cubic root of 70321516 is about 412.7585469437.

The spelling of 70321516 in words is "seventy million, three hundred twenty-one thousand, five hundred sixteen".