72637941 has 4 divisors (see below), whose sum is σ = 96850592. Its totient is φ = 48425292.

The previous prime is 72637921. The next prime is 72637949. The reversal of 72637941 is 14973627.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 72637941 - 2⁹ = 72637429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72637941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72637949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12106321 + ... + 12106326.

It is an arithmetic number, because the mean of its divisors is an integer number (24212648).

Almost surely, 2^72637941 is an apocalyptic number.

It is an amenable number.

72637941 is a deficient number, since it is larger than the sum of its proper divisors (24212651).

72637941 is a wasteful number, since it uses less digits than its factorization.

72637941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24212650.

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

The square root of 72637941 is about 8522.7895081364. The cubic root of 72637941 is about 417.2418301811.

The spelling of 72637941 in words is "seventy-two million, six hundred thirty-seven thousand, nine hundred forty-one".