74655648 has 96 divisors (see below), whose sum is σ = 220993920. Its totient is φ = 24514560.

The previous prime is 74655613. The next prime is 74655667. The reversal of 74655648 is 84655647.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60736 + ... + 61952.

It is an arithmetic number, because the mean of its divisors is an integer number (2302020).

Almost surely, 2^74655648 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 74655648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110496960).

74655648 is an abundant number, since it is smaller than the sum of its proper divisors (146338272).

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

74655648 is a wasteful number, since it uses less digits than its factorization.

74655648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307 (or 1293 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 74655648 is about 8640.3499929112. The cubic root of 74655648 is about 421.0699251757.

Subtracting 74655648 from its reverse (84655647), we obtain a palindrome (9999999).

The spelling of 74655648 in words is "seventy-four million, six hundred fifty-five thousand, six hundred forty-eight".