74864165 has 4 divisors (see below), whose sum is σ = 89837004. Its totient is φ = 59891328.

The previous prime is 74864159. The next prime is 74864171. The reversal of 74864165 is 56146847.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56146847 = 137 ⋅409831.

It is an interprime number because it is at equal distance from previous prime (74864159) and next prime (74864171).

It can be written as a sum of positive squares in 2 ways, for example, as 48011041 + 26853124 = 6929^2 + 5182^2 .

It is a cyclic number.

It is not a de Polignac number, because 74864165 - 2¹² = 74860069 is a prime.

It is a super-2 number, since 2×74864165² = 11209286402294450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7486412 + ... + 7486421.

It is an arithmetic number, because the mean of its divisors is an integer number (22459251).

Almost surely, 2^74864165 is an apocalyptic number.

It is an amenable number.

74864165 is a deficient number, since it is larger than the sum of its proper divisors (14972839).

74864165 is a wasteful number, since it uses less digits than its factorization.

74864165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14972838.

The product of its digits is 161280, while the sum is 41.

The square root of 74864165 is about 8652.4080463187. The cubic root of 74864165 is about 421.4615839585.

The spelling of 74864165 in words is "seventy-four million, eight hundred sixty-four thousand, one hundred sixty-five".