72070615 has 8 divisors (see below), whose sum is σ = 90245088. Its totient is φ = 55149600.

The previous prime is 72070601. The next prime is 72070657. The reversal of 72070615 is 51607027.

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

It is a de Polignac number, because none of the positive numbers 2^k-72070615 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 7 ways as a sum of consecutive naturals, for example, 313236 + ... + 313465.

It is an arithmetic number, because the mean of its divisors is an integer number (11280636).

Almost surely, 2^72070615 is an apocalyptic number.

72070615 is a deficient number, since it is larger than the sum of its proper divisors (18174473).

72070615 is a wasteful number, since it uses less digits than its factorization.

72070615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626729.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 72070615 is about 8489.4413832713. The cubic root of 72070615 is about 416.1527249117.

The spelling of 72070615 in words is "seventy-two million, seventy thousand, six hundred fifteen".