72547605 has 96 divisors (see below), whose sum is σ = 146240640. Its totient is φ = 32970240.

The previous prime is 72547603. The next prime is 72547609. The reversal of 72547605 is 50674527.

72547605 is a `hidden beast` number, since 7 + 2 + 5 + 47 + 605 = 666.

It is not a de Polignac number, because 72547605 - 2¹ = 72547603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72547605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72547603) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 677962 + ... + 678068.

It is an arithmetic number, because the mean of its divisors is an integer number (1523340).

Almost surely, 2^72547605 is an apocalyptic number.

It is an amenable number.

72547605 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

72547605 is a wasteful number, since it uses less digits than its factorization.

72547605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 72547605 is about 8517.4881860793. The cubic root of 72547605 is about 417.0687911631.

The spelling of 72547605 in words is "seventy-two million, five hundred forty-seven thousand, six hundred five".