74677648 has 20 divisors (see below), whose sum is σ = 144956620. Its totient is φ = 37269504.

The previous prime is 74677637. The next prime is 74677649. The reversal of 74677648 is 84677647.

It can be written as a sum of positive squares in 2 ways, for example, as 38340864 + 36336784 = 6192^2 + 6028^2 .

It is a super-2 number, since 2×74677648² = 11153502221623808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74677649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5188 + ... + 13276.

It is an arithmetic number, because the mean of its divisors is an integer number (7247831).

Almost surely, 2^74677648 is an apocalyptic number.

It is an amenable number.

74677648 is a deficient number, since it is larger than the sum of its proper divisors (70278972).

74677648 is a wasteful number, since it uses less digits than its factorization.

74677648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8674 (or 8668 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 49.

The square root of 74677648 is about 8641.6229957109. The cubic root of 74677648 is about 421.1112822991. Note that the first 3 decimals are identical.

Subtracting 74677648 from its reverse (84677647), we obtain a palindrome (9999999).

The spelling of 74677648 in words is "seventy-four million, six hundred seventy-seven thousand, six hundred forty-eight".