72170716 has 12 divisors (see below), whose sum is σ = 127601488. Its totient is φ = 35713152.

The previous prime is 72170699. The next prime is 72170731. The reversal of 72170716 is 61707127.

It is a super-3 number, since 3×72170716³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 92616 + ... + 93391.

Almost surely, 2^72170716 is an apocalyptic number.

It is an amenable number.

72170716 is a deficient number, since it is larger than the sum of its proper divisors (55430772).

72170716 is a wasteful number, since it uses less digits than its factorization.

72170716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186108 (or 186106 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 31.

The square root of 72170716 is about 8495.3349551386. The cubic root of 72170716 is about 416.3453047051.

The spelling of 72170716 in words is "seventy-two million, one hundred seventy thousand, seven hundred sixteen".