74780608 has 56 divisors (see below), whose sum is σ = 172053504. Its totient is φ = 31584000.

The previous prime is 74780581. The next prime is 74780611. The reversal of 74780608 is 80608747.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30633 + ... + 32983.

It is an arithmetic number, because the mean of its divisors is an integer number (3072384).

Almost surely, 2^74780608 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 74780608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86026752).

74780608 is an abundant number, since it is smaller than the sum of its proper divisors (97272896).

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

74780608 is a wasteful number, since it uses less digits than its factorization.

74780608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441 (or 2431 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 74780608 is about 8647.5781580741. The cubic root of 74780608 is about 421.3047257544.

The spelling of 74780608 in words is "seventy-four million, seven hundred eighty thousand, six hundred eight".