74997648 has 120 divisors (see below), whose sum is σ = 231547680. Its totient is φ = 22471680.

The previous prime is 74997647. The next prime is 74997653. The reversal of 74997648 is 84679947.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 74997594 and 74997603.

It is not an unprimeable number, because it can be changed into a prime (74997647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178783 + ... + 179201.

It is an arithmetic number, because the mean of its divisors is an integer number (1929564).

Almost surely, 2^74997648 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 74997648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115773840).

74997648 is an abundant number, since it is smaller than the sum of its proper divisors (156550032).

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

74997648 is a wasteful number, since it uses less digits than its factorization.

74997648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557 (or 548 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 74997648 is about 8660.1182439964. The cubic root of 74997648 is about 421.7119242634.

The spelling of 74997648 in words is "seventy-four million, nine hundred ninety-seven thousand, six hundred forty-eight".