72604399 has 32 divisors (see below), whose sum is σ = 94058496. Its totient is φ = 54574080.

The previous prime is 72604381. The next prime is 72604409. The reversal of 72604399 is 99340627.

It is not a de Polignac number, because 72604399 - 2¹⁷ = 72473327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72604319) 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 31 ways as a sum of consecutive naturals, for example, 111894 + ... + 112540.

It is an arithmetic number, because the mean of its divisors is an integer number (2939328).

Almost surely, 2^72604399 is an apocalyptic number.

72604399 is a deficient number, since it is larger than the sum of its proper divisors (21454097).

72604399 is a wasteful number, since it uses less digits than its factorization.

72604399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 72604399 is about 8520.8214979543. The cubic root of 72604399 is about 417.1775970820.

The spelling of 72604399 in words is "seventy-two million, six hundred four thousand, three hundred ninety-nine".