70520313 has 8 divisors (see below), whose sum is σ = 94745376. Its totient is φ = 46654400.

The previous prime is 70520311. The next prime is 70520327. The reversal of 70520313 is 31302507.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70520313 - 2¹ = 70520311 is a prime.

It is a super-2 number, since 2×70520313² = 9946229091235938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70520313.

It is not an unprimeable number, because it can be changed into a prime (70520311) by changing a digit.

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, 89328 + ... + 90113.

It is an arithmetic number, because the mean of its divisors is an integer number (11843172).

Almost surely, 2^70520313 is an apocalyptic number.

It is an amenable number.

70520313 is a deficient number, since it is larger than the sum of its proper divisors (24225063).

70520313 is a wasteful number, since it uses less digits than its factorization.

70520313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179575.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 70520313 is about 8397.6373463016. The cubic root of 70520313 is about 413.1471333686.

The spelling of 70520313 in words is "seventy million, five hundred twenty thousand, three hundred thirteen".