74557969 has 4 divisors (see below), whose sum is σ = 74586096. Its totient is φ = 74529844.

The previous prime is 74557963. The next prime is 74558009. The reversal of 74557969 is 96975547.

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.

It is a cyclic number.

It is not a de Polignac number, because 74557969 - 2²⁵ = 41003537 is a prime.

It is a super-2 number, since 2×74557969² = 11117781482809922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74557963) 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 3 ways as a sum of consecutive naturals, for example, 9619 + ... + 15544.

It is an arithmetic number, because the mean of its divisors is an integer number (18646524).

Almost surely, 2^74557969 is an apocalyptic number.

It is an amenable number.

74557969 is a deficient number, since it is larger than the sum of its proper divisors (28127).

74557969 is a wasteful number, since it uses less digits than its factorization.

74557969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28126.

The product of its digits is 2381400, while the sum is 52.

The square root of 74557969 is about 8634.6956518455. The cubic root of 74557969 is about 420.8862032412.

The spelling of 74557969 in words is "seventy-four million, five hundred fifty-seven thousand, nine hundred sixty-nine".