73220577 has 4 divisors (see below), whose sum is σ = 97627440. Its totient is φ = 48813716.

The previous prime is 73220551. The next prime is 73220579. The reversal of 73220577 is 77502237.

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.

It is a cyclic number.

It is not a de Polignac number, because 73220577 - 2¹⁸ = 72958433 is a prime.

It is a super-2 number, since 2×73220577² = 10722505792425858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73220579) 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, 12203427 + ... + 12203432.

It is an arithmetic number, because the mean of its divisors is an integer number (24406860).

Almost surely, 2^73220577 is an apocalyptic number.

It is an amenable number.

73220577 is a deficient number, since it is larger than the sum of its proper divisors (24406863).

73220577 is a wasteful number, since it uses less digits than its factorization.

73220577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24406862.

The product of its (nonzero) digits is 20580, while the sum is 33.

The square root of 73220577 is about 8556.9023016510. The cubic root of 73220577 is about 418.3544397993.

The spelling of 73220577 in words is "seventy-three million, two hundred twenty thousand, five hundred seventy-seven".