72604661 has 8 divisors (see below), whose sum is σ = 75276000. Its totient is φ = 69944560.

The previous prime is 72604607. The next prime is 72604667. The reversal of 72604661 is 16640627.

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

It is a cyclic number.

It is not a de Polignac number, because 72604661 - 2²² = 68410357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72604667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11690 + ... + 16788.

It is an arithmetic number, because the mean of its divisors is an integer number (9409500).

Almost surely, 2^72604661 is an apocalyptic number.

It is an amenable number.

72604661 is a deficient number, since it is larger than the sum of its proper divisors (2671339).

72604661 is a wasteful number, since it uses less digits than its factorization.

72604661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5619.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 72604661 is about 8520.8368720449. The cubic root of 72604661 is about 417.1780988899.

The spelling of 72604661 in words is "seventy-two million, six hundred four thousand, six hundred sixty-one".