70508313 has 20 divisors (see below), whose sum is σ = 105553140. Its totient is φ = 46904832.

The previous prime is 70508311. The next prime is 70508327. The reversal of 70508313 is 31380507.

It can be written as a sum of positive squares in 2 ways, for example, as 2396304 + 68112009 = 1548^2 + 8253^2 .

It is not a de Polignac number, because 70508313 - 2¹ = 70508311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (70508311) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 74781 + ... + 75717.

It is an arithmetic number, because the mean of its divisors is an integer number (5277657).

Almost surely, 2^70508313 is an apocalyptic number.

It is an amenable number.

70508313 is a deficient number, since it is larger than the sum of its proper divisors (35044827).

70508313 is an equidigital number, since it uses as much as digits as its factorization.

70508313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878 (or 1869 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 70508313 is about 8396.9228292274. The cubic root of 70508313 is about 413.1236978192.

The spelling of 70508313 in words is "seventy million, five hundred eight thousand, three hundred thirteen".