74621768 has 32 divisors (see below), whose sum is σ = 152758200. Its totient is φ = 33965568.

The previous prime is 74621761. The next prime is 74621773. The reversal of 74621768 is 86712647.

It can be written as a sum of positive squares in 4 ways, for example, as 67535524 + 7086244 = 8218^2 + 2662^2 .

It is not an unprimeable number, because it can be changed into a prime (74621761) 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 7 ways as a sum of consecutive naturals, for example, 2678 + ... + 12506.

Almost surely, 2^74621768 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 74621768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76379100).

74621768 is an abundant number, since it is smaller than the sum of its proper divisors (78136432).

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

74621768 is a wasteful number, since it uses less digits than its factorization.

74621768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9921 (or 9917 counting only the distinct ones).

The product of its digits is 112896, while the sum is 41.

The square root of 74621768 is about 8638.3892016973. The cubic root of 74621768 is about 421.0062193118.

The spelling of 74621768 in words is "seventy-four million, six hundred twenty-one thousand, seven hundred sixty-eight".