74644349 has 4 divisors (see below), whose sum is σ = 80386236. Its totient is φ = 68902464.

The previous prime is 74644343. The next prime is 74644351. The reversal of 74644349 is 94344647.

It is a happy number.

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 21252100 + 53392249 = 4610^2 + 7307^2 .

It is a cyclic number.

It is not a de Polignac number, because 74644349 - 2⁴ = 74644333 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 (74644343) 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, 2870924 + ... + 2870949.

It is an arithmetic number, because the mean of its divisors is an integer number (20096559).

Almost surely, 2^74644349 is an apocalyptic number.

It is an amenable number.

74644349 is a deficient number, since it is larger than the sum of its proper divisors (5741887).

74644349 is a wasteful number, since it uses less digits than its factorization.

74644349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5741886.

The product of its digits is 290304, while the sum is 41.

The square root of 74644349 is about 8639.6961173412. The cubic root of 74644349 is about 421.0486813749.

The spelling of 74644349 in words is "seventy-four million, six hundred forty-four thousand, three hundred forty-nine".