74774473 has 4 divisors (see below), whose sum is σ = 75436308. Its totient is φ = 74112640.

The previous prime is 74774461. The next prime is 74774501. The reversal of 74774473 is 37447747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37447747 = 3767 ⋅9941.

It can be written as a sum of positive squares in 2 ways, for example, as 12475024 + 62299449 = 3532^2 + 7893^2 .

It is a cyclic number.

It is not a de Polignac number, because 74774473 - 2⁹ = 74773961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74774423) 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, 330748 + ... + 330973.

It is an arithmetic number, because the mean of its divisors is an integer number (18859077).

Almost surely, 2^74774473 is an apocalyptic number.

It is an amenable number.

74774473 is a deficient number, since it is larger than the sum of its proper divisors (661835).

74774473 is a wasteful number, since it uses less digits than its factorization.

74774473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661834.

The product of its digits is 460992, while the sum is 43.

The square root of 74774473 is about 8647.2234272048. The cubic root of 74774473 is about 421.2932041615.

The spelling of 74774473 in words is "seventy-four million, seven hundred seventy-four thousand, four hundred seventy-three".