74549689 has 4 divisors (see below), whose sum is σ = 74634624. Its totient is φ = 74464756.

The previous prime is 74549681. The next prime is 74549707. The reversal of 74549689 is 98694547.

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: 98694547 = 7 ⋅14099221.

It is a cyclic number.

It is not a de Polignac number, because 74549689 - 2³ = 74549681 is a prime.

It is a super-2 number, since 2×74549689² = 11115312259993442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74549681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41137 + ... + 42910.

It is an arithmetic number, because the mean of its divisors is an integer number (18658656).

Almost surely, 2^74549689 is an apocalyptic number.

It is an amenable number.

74549689 is a deficient number, since it is larger than the sum of its proper divisors (84935).

74549689 is an equidigital number, since it uses as much as digits as its factorization.

74549689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84934.

The product of its digits is 2177280, while the sum is 52.

The square root of 74549689 is about 8634.2161775114. The cubic root of 74549689 is about 420.8706222249.

The spelling of 74549689 in words is "seventy-four million, five hundred forty-nine thousand, six hundred eighty-nine".