74794221 has 6 divisors (see below), whose sum is σ = 108036110. Its totient is φ = 49862808.

The previous prime is 74794207. The next prime is 74794231. The reversal of 74794221 is 12249747.

It can be written as a sum of positive squares in only one way, i.e., 64160100 + 10634121 = 8010^2 + 3261^2 .

It is not a de Polignac number, because 74794221 - 2⁵ = 74794189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74794201) 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, 4155226 + ... + 4155243.

Almost surely, 2^74794221 is an apocalyptic number.

It is an amenable number.

74794221 is a deficient number, since it is larger than the sum of its proper divisors (33241889).

74794221 is a wasteful number, since it uses less digits than its factorization.

74794221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8310475 (or 8310472 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 74794221 is about 8648.3652212427. The cubic root of 74794221 is about 421.3302888579.

The spelling of 74794221 in words is "seventy-four million, seven hundred ninety-four thousand, two hundred twenty-one".