73666775 has 24 divisors (see below), whose sum is σ = 112430304. Its totient is φ = 46627200.

The previous prime is 73666759. The next prime is 73666787. The reversal of 73666775 is 57766637.

It is not a de Polignac number, because 73666775 - 2⁴ = 73666759 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13916 + ... + 18465.

It is an arithmetic number, because the mean of its divisors is an integer number (4684596).

Almost surely, 2^73666775 is an apocalyptic number.

73666775 is a deficient number, since it is larger than the sum of its proper divisors (38763529).

73666775 is a wasteful number, since it uses less digits than its factorization.

73666775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32411 (or 32406 counting only the distinct ones).

The product of its digits is 1111320, while the sum is 47.

The square root of 73666775 is about 8582.9351040306. The cubic root of 73666775 is about 419.2025211296.

It can be divided in two parts, 7366 and 6775, that added together give a palindrome (14141).

The spelling of 73666775 in words is "seventy-three million, six hundred sixty-six thousand, seven hundred seventy-five".