72653033 has 4 divisors (see below), whose sum is σ = 75158340. Its totient is φ = 70147728.

The previous prime is 72653027. The next prime is 72653041. The reversal of 72653033 is 33035627.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19829209 + 52823824 = 4453^2 + 7268^2 .

It is a cyclic number.

It is not a de Polignac number, because 72653033 - 2²⁰ = 71604457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 2505277 = 72653033 / (7 + 2 + 6 + 5 + 3 + 0 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72652987 and 72653005.

It is not an unprimeable number, because it can be changed into a prime (72653003) 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, 1252610 + ... + 1252667.

It is an arithmetic number, because the mean of its divisors is an integer number (18789585).

Almost surely, 2^72653033 is an apocalyptic number.

It is an amenable number.

72653033 is a deficient number, since it is larger than the sum of its proper divisors (2505307).

72653033 is a wasteful number, since it uses less digits than its factorization.

72653033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505306.

The product of its (nonzero) digits is 11340, while the sum is 29.

The square root of 72653033 is about 8523.6748530197. The cubic root of 72653033 is about 417.2707249871.

The spelling of 72653033 in words is "seventy-two million, six hundred fifty-three thousand, thirty-three".