73564811 has 4 divisors (see below), whose sum is σ = 73626672. Its totient is φ = 73502952.

The previous prime is 73564781. The next prime is 73564817. The reversal of 73564811 is 11846537.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11846537 = 571 ⋅20747.

It is a cyclic number.

It is not a de Polignac number, because 73564811 - 2²⁶ = 6455947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73564817) 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, 29111 + ... + 31536.

It is an arithmetic number, because the mean of its divisors is an integer number (18406668).

Almost surely, 2^73564811 is an apocalyptic number.

73564811 is a deficient number, since it is larger than the sum of its proper divisors (61861).

73564811 is a wasteful number, since it uses less digits than its factorization.

73564811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61860.

The product of its digits is 20160, while the sum is 35.

The square root of 73564811 is about 8576.9931211352. The cubic root of 73564811 is about 419.0090223107.

It can be divided in two parts, 7356 and 4811, that added together give a cube (12167 = 23³).

The spelling of 73564811 in words is "seventy-three million, five hundred sixty-four thousand, eight hundred eleven".