74426997 has 4 divisors (see below), whose sum is σ = 99236000. Its totient is φ = 49617996.

The previous prime is 74426983. The next prime is 74427007. The reversal of 74426997 is 79962447.

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: 79962447 = 3 ⋅26654149.

It is not a de Polignac number, because 74426997 - 2¹¹ = 74424949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74426977) 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, 12404497 + ... + 12404502.

It is an arithmetic number, because the mean of its divisors is an integer number (24809000).

Almost surely, 2^74426997 is an apocalyptic number.

It is an amenable number.

74426997 is a deficient number, since it is larger than the sum of its proper divisors (24809003).

74426997 is a wasteful number, since it uses less digits than its factorization.

74426997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24809002.

The product of its digits is 762048, while the sum is 48.

The square root of 74426997 is about 8627.1082640709. The cubic root of 74426997 is about 420.6396093578.

The spelling of 74426997 in words is "seventy-four million, four hundred twenty-six thousand, nine hundred ninety-seven".