74686399 has 8 divisors (see below), whose sum is σ = 76942800. Its totient is φ = 72453696.

The previous prime is 74686393. The next prime is 74686421. The reversal of 74686399 is 99368647.

74686399 is nontrivially palindromic in base 6.

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

It is a cyclic number.

It is not a de Polignac number, because 74686399 - 2¹³ = 74678207 is a prime.

It is a Duffinian number.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74686393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579 + ... + 12235.

It is an arithmetic number, because the mean of its divisors is an integer number (9617850).

Almost surely, 2^74686399 is an apocalyptic number.

74686399 is a deficient number, since it is larger than the sum of its proper divisors (2256401).

74686399 is a wasteful number, since it uses less digits than its factorization.

74686399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11849.

The product of its digits is 1959552, while the sum is 52.

The square root of 74686399 is about 8642.1293093774. The cubic root of 74686399 is about 421.1277307769.

The spelling of 74686399 in words is "seventy-four million, six hundred eighty-six thousand, three hundred ninety-nine".