74468821 has 16 divisors (see below), whose sum is σ = 87552000. Its totient is φ = 62017200.

The previous prime is 74468813. The next prime is 74468831. The reversal of 74468821 is 12886447.

It is not a de Polignac number, because 74468821 - 2³ = 74468813 is a prime.

It is a super-2 number, since 2×74468821² = 11091210602260082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74468831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48930 + ... + 50428.

It is an arithmetic number, because the mean of its divisors is an integer number (5472000).

Almost surely, 2^74468821 is an apocalyptic number.

It is an amenable number.

74468821 is a deficient number, since it is larger than the sum of its proper divisors (13083179).

74468821 is a wasteful number, since it uses less digits than its factorization.

74468821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704.

The product of its digits is 86016, while the sum is 40.

The square root of 74468821 is about 8629.5319108281. The cubic root of 74468821 is about 420.7183869401.

The spelling of 74468821 in words is "seventy-four million, four hundred sixty-eight thousand, eight hundred twenty-one".