74428697 has 12 divisors (see below), whose sum is σ = 86785920. Its totient is φ = 63644616.

The previous prime is 74428687. The next prime is 74428729. The reversal of 74428697 is 79682447.

It is not a de Polignac number, because 74428697 - 2⁶ = 74428633 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74428637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22304 + ... + 25422.

It is an arithmetic number, because the mean of its divisors is an integer number (7232160).

Almost surely, 2^74428697 is an apocalyptic number.

It is an amenable number.

74428697 is a deficient number, since it is larger than the sum of its proper divisors (12357223).

74428697 is a wasteful number, since it uses less digits than its factorization.

74428697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3620 (or 3613 counting only the distinct ones).

The product of its digits is 677376, while the sum is 47.

The square root of 74428697 is about 8627.2067901494. The cubic root of 74428697 is about 420.6428119677.

The spelling of 74428697 in words is "seventy-four million, four hundred twenty-eight thousand, six hundred ninety-seven".