72647037 has 28 divisors (see below), whose sum is σ = 109649760. Its totient is φ = 48108168.

The previous prime is 72647027. The next prime is 72647063. The reversal of 72647037 is 73074627.

72647037 is a `hidden beast` number, since 7 + 2 + 647 + 0 + 3 + 7 = 666.

It is not a de Polignac number, because 72647037 - 2¹⁴ = 72630653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72646992 and 72647010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72647017) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 165264 + ... + 165702.

Almost surely, 2^72647037 is an apocalyptic number.

It is an amenable number.

72647037 is a deficient number, since it is larger than the sum of its proper divisors (37002723).

72647037 is an equidigital number, since it uses as much as digits as its factorization.

72647037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 36.

The square root of 72647037 is about 8523.3231195350. The cubic root of 72647037 is about 417.2592456586.

The spelling of 72647037 in words is "seventy-two million, six hundred forty-seven thousand, thirty-seven".