74920369 has 4 divisors (see below), whose sum is σ = 77503860. Its totient is φ = 72336880.

The previous prime is 74920357. The next prime is 74920441. The reversal of 74920369 is 96302947.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62410000 + 12510369 = 7900^2 + 3537^2 .

It is a cyclic number.

It is not a de Polignac number, because 74920369 - 2¹¹ = 74918321 is a prime.

It is a super-2 number, since 2×74920369² = 11226123382192322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74920969) 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, 1291702 + ... + 1291759.

It is an arithmetic number, because the mean of its divisors is an integer number (19375965).

Almost surely, 2^74920369 is an apocalyptic number.

It is an amenable number.

74920369 is a deficient number, since it is larger than the sum of its proper divisors (2583491).

74920369 is a wasteful number, since it uses less digits than its factorization.

74920369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583490.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 74920369 is about 8655.6553189230. The cubic root of 74920369 is about 421.5670278269.

The spelling of 74920369 in words is "seventy-four million, nine hundred twenty thousand, three hundred sixty-nine".