72631349 has 4 divisors (see below), whose sum is σ = 83007264. Its totient is φ = 62255436.

The previous prime is 72631331. The next prime is 72631373. The reversal of 72631349 is 94313627.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94313627 = 3643 ⋅25889.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72631349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72631549) 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, 5187947 + ... + 5187960.

It is an arithmetic number, because the mean of its divisors is an integer number (20751816).

Almost surely, 2^72631349 is an apocalyptic number.

It is an amenable number.

72631349 is a deficient number, since it is larger than the sum of its proper divisors (10375915).

72631349 is a wasteful number, since it uses less digits than its factorization.

72631349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10375914.

The product of its digits is 27216, while the sum is 35.

The square root of 72631349 is about 8522.4027715193. The cubic root of 72631349 is about 417.2292080293.

The spelling of 72631349 in words is "seventy-two million, six hundred thirty-one thousand, three hundred forty-nine".