72634361 has 4 divisors (see below), whose sum is σ = 72868224. Its totient is φ = 72400500.

The previous prime is 72634351. The next prime is 72634363. The reversal of 72634361 is 16343627.

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: 16343627 = 97 ⋅168491.

It is a cyclic number.

It is not a de Polignac number, because 72634361 - 2⁶ = 72634297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72634363) 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, 116465 + ... + 117086.

It is an arithmetic number, because the mean of its divisors is an integer number (18217056).

Almost surely, 2^72634361 is an apocalyptic number.

It is an amenable number.

72634361 is a deficient number, since it is larger than the sum of its proper divisors (233863).

72634361 is a wasteful number, since it uses less digits than its factorization.

72634361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233862.

The product of its digits is 18144, while the sum is 32.

The square root of 72634361 is about 8522.5794804155. The cubic root of 72634361 is about 417.2349754058.

Adding to 72634361 its reverse (16343627), we get a palindrome (88977988).

The spelling of 72634361 in words is "seventy-two million, six hundred thirty-four thousand, three hundred sixty-one".