74274777 has 6 divisors (see below), whose sum is σ = 107285802. Its totient is φ = 49516512.

The previous prime is 74274769. The next prime is 74274779. The reversal of 74274777 is 77747247.

It can be written as a sum of positive squares in only one way, i.e., 60279696 + 13995081 = 7764^2 + 3741^2 .

It is not a de Polignac number, because 74274777 - 2³ = 74274769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74274779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4126368 + ... + 4126385.

It is an arithmetic number, because the mean of its divisors is an integer number (17880967).

Almost surely, 2^74274777 is an apocalyptic number.

It is an amenable number.

74274777 is a deficient number, since it is larger than the sum of its proper divisors (33011025).

74274777 is a wasteful number, since it uses less digits than its factorization.

74274777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8252759 (or 8252756 counting only the distinct ones).

The product of its digits is 537824, while the sum is 45.

The square root of 74274777 is about 8618.2815572479. The cubic root of 74274777 is about 420.3526460007.

The spelling of 74274777 in words is "seventy-four million, two hundred seventy-four thousand, seven hundred seventy-seven".