72617943 has 32 divisors (see below), whose sum is σ = 106444800. Its totient is φ = 43860096.

The previous prime is 72617933. The next prime is 72617947. The reversal of 72617943 is 34971627.

It is not a de Polignac number, because 72617943 - 2¹⁰ = 72616919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72617947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 325530 + ... + 325752.

It is an arithmetic number, because the mean of its divisors is an integer number (3326400).

Almost surely, 2^72617943 is an apocalyptic number.

72617943 is a deficient number, since it is larger than the sum of its proper divisors (33826857).

72617943 is a wasteful number, since it uses less digits than its factorization.

72617943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471.

The product of its digits is 63504, while the sum is 39.

The square root of 72617943 is about 8521.6162199433. The cubic root of 72617943 is about 417.2035362911.

The spelling of 72617943 in words is "seventy-two million, six hundred seventeen thousand, nine hundred forty-three".