74518865 has 4 divisors (see below), whose sum is σ = 89422644. Its totient is φ = 59615088.

The previous prime is 74518861. The next prime is 74518891. The reversal of 74518865 is 56881547.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56881547 = 1627 ⋅34961.

It can be written as a sum of positive squares in 2 ways, for example, as 32307856 + 42211009 = 5684^2 + 6497^2 .

It is a cyclic number.

It is not a de Polignac number, because 74518865 - 2² = 74518861 is a prime.

It is a super-2 number, since 2×74518865² = 11106122481776450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74518861) 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, 7451882 + ... + 7451891.

It is an arithmetic number, because the mean of its divisors is an integer number (22355661).

Almost surely, 2^74518865 is an apocalyptic number.

It is an amenable number.

74518865 is a deficient number, since it is larger than the sum of its proper divisors (14903779).

74518865 is a wasteful number, since it uses less digits than its factorization.

74518865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14903778.

The product of its digits is 268800, while the sum is 44.

The square root of 74518865 is about 8632.4310017515. The cubic root of 74518865 is about 420.8126085493.

The spelling of 74518865 in words is "seventy-four million, five hundred eighteen thousand, eight hundred sixty-five".