74073680 has 20 divisors (see below), whose sum is σ = 172221492. Its totient is φ = 29629440.

The previous prime is 74073677. The next prime is 74073689. The reversal of 74073680 is 8637047.

It can be written as a sum of positive squares in 2 ways, for example, as 14227984 + 59845696 = 3772^2 + 7736^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 74073680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74073689) 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, 462881 + ... + 463040.

Almost surely, 2^74073680 is an apocalyptic number.

It is an amenable number.

74073680 is an abundant number, since it is smaller than the sum of its proper divisors (98147812).

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

74073680 is a wasteful number, since it uses less digits than its factorization.

74073680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925934 (or 925928 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 74073680 is about 8606.6067645734. The cubic root of 74073680 is about 419.9729385436.

The spelling of 74073680 in words is "seventy-four million, seventy-three thousand, six hundred eighty".