74399345 has 8 divisors (see below), whose sum is σ = 93978240. Its totient is φ = 56386800.

The previous prime is 74399329. The next prime is 74399371. The reversal of 74399345 is 54399347.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74399345 - 2⁴ = 74399329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74399296 and 74399305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391481 + ... + 391670.

It is an arithmetic number, because the mean of its divisors is an integer number (11747280).

Almost surely, 2^74399345 is an apocalyptic number.

It is an amenable number.

74399345 is a deficient number, since it is larger than the sum of its proper divisors (19578895).

74399345 is a wasteful number, since it uses less digits than its factorization.

74399345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783175.

The product of its digits is 408240, while the sum is 44.

The square root of 74399345 is about 8625.5054924335. The cubic root of 74399345 is about 420.5875092341.

The spelling of 74399345 in words is "seventy-four million, three hundred ninety-nine thousand, three hundred forty-five".