74691648 has 168 divisors, whose sum is σ = 228234240. Its totient is φ = 23316480.

The previous prime is 74691647. The next prime is 74691689. The reversal of 74691648 is 84619647.

It is not an unprimeable number, because it can be changed into a prime (74691647) 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 23 ways as a sum of consecutive naturals, for example, 839188 + ... + 839276.

Almost surely, 2^74691648 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 74691648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114117120).

74691648 is an abundant number, since it is smaller than the sum of its proper divisors (153542592).

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

74691648 is a wasteful number, since it uses less digits than its factorization.

74691648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 172 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 74691648 is about 8642.4329907729. The cubic root of 74691648 is about 421.1375962397.

The spelling of 74691648 in words is "seventy-four million, six hundred ninety-one thousand, six hundred forty-eight".