74696421 has 4 divisors (see below), whose sum is σ = 99595232. Its totient is φ = 49797612.

The previous prime is 74696407. The next prime is 74696437. The reversal of 74696421 is 12469647.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12469647 = 3 ⋅4156549.

It is not a de Polignac number, because 74696421 - 2¹⁴ = 74680037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74696421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74696021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12449401 + ... + 12449406.

It is an arithmetic number, because the mean of its divisors is an integer number (24898808).

Almost surely, 2^74696421 is an apocalyptic number.

It is an amenable number.

74696421 is a deficient number, since it is larger than the sum of its proper divisors (24898811).

74696421 is a wasteful number, since it uses less digits than its factorization.

74696421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24898810.

The product of its digits is 72576, while the sum is 39.

The square root of 74696421 is about 8642.7091238801. The cubic root of 74696421 is about 421.1465666623.

The spelling of 74696421 in words is "seventy-four million, six hundred ninety-six thousand, four hundred twenty-one".