74998321 has 16 divisors (see below), whose sum is σ = 80150400. Its totient is φ = 70051968.

The previous prime is 74998279. The next prime is 74998327. The reversal of 74998321 is 12389947.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74998321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

Its product of digits (108864) is a multiple of the sum of its prime divisors (648).

It is not an unprimeable number, because it can be changed into a prime (74998327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170620 + ... + 171058.

It is an arithmetic number, because the mean of its divisors is an integer number (5009400).

Almost surely, 2^74998321 is an apocalyptic number.

It is an amenable number.

74998321 is a deficient number, since it is larger than the sum of its proper divisors (5152079).

74998321 is a wasteful number, since it uses less digits than its factorization.

74998321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648.

The product of its digits is 108864, while the sum is 43.

The square root of 74998321 is about 8660.1571001917. The cubic root of 74998321 is about 421.7131856864.

The spelling of 74998321 in words is "seventy-four million, nine hundred ninety-eight thousand, three hundred twenty-one".