74747668 has 12 divisors (see below), whose sum is σ = 131068980. Its totient is φ = 37299392.

The previous prime is 74747663. The next prime is 74747669. The reversal of 74747668 is 86674747.

It can be written as a sum of positive squares in 2 ways, for example, as 62441604 + 12306064 = 7902^2 + 3508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74747663) 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, 16321 + ... + 20392.

It is an arithmetic number, because the mean of its divisors is an integer number (10922415).

Almost surely, 2^74747668 is an apocalyptic number.

It is an amenable number.

74747668 is a deficient number, since it is larger than the sum of its proper divisors (56321312).

74747668 is a wasteful number, since it uses less digits than its factorization.

74747668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37226 (or 37224 counting only the distinct ones).

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

The square root of 74747668 is about 8645.6733688013. The cubic root of 74747668 is about 421.2428567031.

The spelling of 74747668 in words is "seventy-four million, seven hundred forty-seven thousand, six hundred sixty-eight".