72761233 has 4 divisors (see below), whose sum is σ = 72778608. Its totient is φ = 72743860.

The previous prime is 72761231. The next prime is 72761243. The reversal of 72761233 is 33216727.

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: 33216727 = 1061 ⋅31307.

It is a cyclic number.

It is not a de Polignac number, because 72761233 - 2¹ = 72761231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72761195 and 72761204.

It is not an unprimeable number, because it can be changed into a prime (72761231) 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, 1878 + ... + 12208.

It is an arithmetic number, because the mean of its divisors is an integer number (18194652).

Almost surely, 2^72761233 is an apocalyptic number.

It is an amenable number.

72761233 is a deficient number, since it is larger than the sum of its proper divisors (17375).

72761233 is a wasteful number, since it uses less digits than its factorization.

72761233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17374.

The product of its digits is 10584, while the sum is 31.

The square root of 72761233 is about 8530.0195193212. The cubic root of 72761233 is about 417.4777651993.

The spelling of 72761233 in words is "seventy-two million, seven hundred sixty-one thousand, two hundred thirty-three".