72794569 has 4 divisors (see below), whose sum is σ = 73671696. Its totient is φ = 71917444.

The previous prime is 72794543. The next prime is 72794573. The reversal of 72794569 is 96549727.

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: 96549727 = 73 ⋅1322599.

It is a cyclic number.

It is not a de Polignac number, because 72794569 - 2⁵ = 72794537 is a prime.

It is a super-2 number, since 2×72794569² = 10598098551791522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72794509) 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, 438439 + ... + 438604.

It is an arithmetic number, because the mean of its divisors is an integer number (18417924).

Almost surely, 2^72794569 is an apocalyptic number.

It is an amenable number.

72794569 is a deficient number, since it is larger than the sum of its proper divisors (877127).

72794569 is an equidigital number, since it uses as much as digits as its factorization.

72794569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877126.

The product of its digits is 952560, while the sum is 49.

The square root of 72794569 is about 8531.9733356358. The cubic root of 72794569 is about 417.5415121212.

The spelling of 72794569 in words is "seventy-two million, seven hundred ninety-four thousand, five hundred sixty-nine".