70665313 has 8 divisors (see below), whose sum is σ = 75108800. Its totient is φ = 66294288.

The previous prime is 70665293. The next prime is 70665317. The reversal of 70665313 is 31356607.

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 70665313 - 2⁵ = 70665281 is a prime.

It is a super-2 number, since 2×70665313² = 9987172922775938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70665317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16098 + ... + 20011.

It is an arithmetic number, because the mean of its divisors is an integer number (9388600).

Almost surely, 2^70665313 is an apocalyptic number.

It is an amenable number.

70665313 is a deficient number, since it is larger than the sum of its proper divisors (4443487).

70665313 is a wasteful number, since it uses less digits than its factorization.

70665313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36231.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 70665313 is about 8406.2662936645. The cubic root of 70665313 is about 413.4301030073.

The spelling of 70665313 in words is "seventy million, six hundred sixty-five thousand, three hundred thirteen".