74663556 has 48 divisors (see below), whose sum is σ = 193294080. Its totient is φ = 22239520.

The previous prime is 74663551. The next prime is 74663557. The reversal of 74663556 is 65536647.

It is not an unprimeable number, because it can be changed into a prime (74663551) 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 15 ways as a sum of consecutive naturals, for example, 2995 + ... + 12581.

It is an arithmetic number, because the mean of its divisors is an integer number (4026960).

Almost surely, 2^74663556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74663556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96647040).

74663556 is an abundant number, since it is smaller than the sum of its proper divisors (118630524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74663556 is a wasteful number, since it uses less digits than its factorization.

74663556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9664 (or 9662 counting only the distinct ones).

The product of its digits is 453600, while the sum is 42.

The square root of 74663556 is about 8640.8076011447. The cubic root of 74663556 is about 421.0847921169.

The spelling of 74663556 in words is "seventy-four million, six hundred sixty-three thousand, five hundred fifty-six".