74487169 has 4 divisors (see below), whose sum is σ = 74602944. Its totient is φ = 74371396.

The previous prime is 74487157. The next prime is 74487187. The reversal of 74487169 is 96178447.

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: 96178447 = 1951 ⋅49297.

It is a cyclic number.

It is not a de Polignac number, because 74487169 - 2¹¹ = 74485121 is a prime.

It is a super-2 number, since 2×74487169² = 11096676691269122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74487139) 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, 56917 + ... + 58210.

It is an arithmetic number, because the mean of its divisors is an integer number (18650736).

Almost surely, 2^74487169 is an apocalyptic number.

It is an amenable number.

74487169 is a deficient number, since it is larger than the sum of its proper divisors (115775).

74487169 is a wasteful number, since it uses less digits than its factorization.

74487169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115774.

The product of its digits is 338688, while the sum is 46.

The square root of 74487169 is about 8630.5949389367. The cubic root of 74487169 is about 420.7529370018.

The spelling of 74487169 in words is "seventy-four million, four hundred eighty-seven thousand, one hundred sixty-nine".