72649323 has 12 divisors (see below), whose sum is σ = 105694680. Its totient is φ = 48083616.

The previous prime is 72649309. The next prime is 72649327. The reversal of 72649323 is 32394627.

It is a happy number.

72649323 is a `hidden beast` number, since 7 + 2 + 649 + 3 + 2 + 3 = 666.

It is not a de Polignac number, because 72649323 - 2¹⁰ = 72648299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72649327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27786 + ... + 30287.

It is an arithmetic number, because the mean of its divisors is an integer number (8807890).

Almost surely, 2^72649323 is an apocalyptic number.

72649323 is a deficient number, since it is larger than the sum of its proper divisors (33045357).

72649323 is a wasteful number, since it uses less digits than its factorization.

72649323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58218 (or 58215 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 72649323 is about 8523.4572211046. The cubic root of 72649323 is about 417.2636222749.

The spelling of 72649323 in words is "seventy-two million, six hundred forty-nine thousand, three hundred twenty-three".