74661321 has 16 divisors (see below), whose sum is σ = 114899328. Its totient is φ = 42240000.

The previous prime is 74661311. The next prime is 74661337. The reversal of 74661321 is 12316647.

It is not a de Polignac number, because 74661321 - 2⁹ = 74660809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74661311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15480 + ... + 19721.

It is an arithmetic number, because the mean of its divisors is an integer number (7181208).

Almost surely, 2^74661321 is an apocalyptic number.

It is an amenable number.

74661321 is a deficient number, since it is larger than the sum of its proper divisors (40238007).

74661321 is a wasteful number, since it uses less digits than its factorization.

74661321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35312.

The product of its digits is 6048, while the sum is 30.

The square root of 74661321 is about 8640.6782719877. The cubic root of 74661321 is about 421.0805904513.

Adding to 74661321 its reverse (12316647), we get a palindrome (86977968).

The spelling of 74661321 in words is "seventy-four million, six hundred sixty-one thousand, three hundred twenty-one".