72904619 has 8 divisors (see below), whose sum is σ = 77345568. Its totient is φ = 68480640.

The previous prime is 72904613. The next prime is 72904633. The reversal of 72904619 is 91640927.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72904619 is a prime.

It is a super-2 number, since 2×72904619² = 10630166943070322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72904613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5234 + ... + 13160.

It is an arithmetic number, because the mean of its divisors is an integer number (9668196).

Almost surely, 2^72904619 is an apocalyptic number.

72904619 is a deficient number, since it is larger than the sum of its proper divisors (4440949).

72904619 is a wasteful number, since it uses less digits than its factorization.

72904619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8485.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 72904619 is about 8538.4201700315. The cubic root of 72904619 is about 417.7518176778.

The spelling of 72904619 in words is "seventy-two million, nine hundred four thousand, six hundred nineteen".