74319621 has 32 divisors (see below), whose sum is σ = 108051840. Its totient is φ = 45287424.

The previous prime is 74319577. The next prime is 74319649. The reversal of 74319621 is 12691347.

It is not a de Polignac number, because 74319621 - 2⁹ = 74319109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74319691) 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 31 ways as a sum of consecutive naturals, for example, 220365 + ... + 220701.

It is an arithmetic number, because the mean of its divisors is an integer number (3376620).

Almost surely, 2^74319621 is an apocalyptic number.

It is an amenable number.

74319621 is a deficient number, since it is larger than the sum of its proper divisors (33732219).

74319621 is a wasteful number, since it uses less digits than its factorization.

74319621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485.

The product of its digits is 9072, while the sum is 33.

The square root of 74319621 is about 8620.8828434215. The cubic root of 74319621 is about 420.4372260893.

The spelling of 74319621 in words is "seventy-four million, three hundred nineteen thousand, six hundred twenty-one".