72070315 has 4 divisors (see below), whose sum is σ = 86484384. Its totient is φ = 57656248.

The previous prime is 72070309. The next prime is 72070351. The reversal of 72070315 is 51307027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51307027 = 1867 ⋅27481.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72070315 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72070315.

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, 7207027 + ... + 7207036.

It is an arithmetic number, because the mean of its divisors is an integer number (21621096).

Almost surely, 2^72070315 is an apocalyptic number.

72070315 is a deficient number, since it is larger than the sum of its proper divisors (14414069).

72070315 is a wasteful number, since it uses less digits than its factorization.

72070315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14414068.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 72070315 is about 8489.4237142459. The cubic root of 72070315 is about 416.1521474873.

The spelling of 72070315 in words is "seventy-two million, seventy thousand, three hundred fifteen".