74938221 has 6 divisors (see below), whose sum is σ = 108244110. Its totient is φ = 49958808.

The previous prime is 74938219. The next prime is 74938243. The reversal of 74938221 is 12283947.

It can be written as a sum of positive squares in only one way, i.e., 54552996 + 20385225 = 7386^2 + 4515^2 .

It is not a de Polignac number, because 74938221 - 2¹ = 74938219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74938321) 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, 4163226 + ... + 4163243.

It is an arithmetic number, because the mean of its divisors is an integer number (18040685).

Almost surely, 2^74938221 is an apocalyptic number.

It is an amenable number.

74938221 is a deficient number, since it is larger than the sum of its proper divisors (33305889).

74938221 is a wasteful number, since it uses less digits than its factorization.

74938221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8326475 (or 8326472 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 74938221 is about 8656.6864908000. The cubic root of 74938221 is about 421.6005087837.

The spelling of 74938221 in words is "seventy-four million, nine hundred thirty-eight thousand, two hundred twenty-one".