70239965 has 4 divisors (see below), whose sum is σ = 84287964. Its totient is φ = 56191968.

The previous prime is 70239959. The next prime is 70239977. The reversal of 70239965 is 56993207.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11042329 + 59197636 = 3323^2 + 7694^2 .

It is a cyclic number.

It is not a de Polignac number, because 70239965 - 2⁶ = 70239901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7023992 + ... + 7024001.

It is an arithmetic number, because the mean of its divisors is an integer number (21071991).

Almost surely, 2^70239965 is an apocalyptic number.

It is an amenable number.

70239965 is a deficient number, since it is larger than the sum of its proper divisors (14047999).

70239965 is a wasteful number, since it uses less digits than its factorization.

70239965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14047998.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 70239965 is about 8380.9286478290. The cubic root of 70239965 is about 412.5989282162.

The spelling of 70239965 in words is "seventy million, two hundred thirty-nine thousand, nine hundred sixty-five".