74560720 has 40 divisors (see below), whose sum is σ = 186691176. Its totient is φ = 27529728.

The previous prime is 74560697. The next prime is 74560747. The reversal of 74560720 is 2706547.

It can be written as a sum of positive squares in 4 ways, for example, as 118336 + 74442384 = 344^2 + 8628^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34807 + ... + 36886.

Almost surely, 2^74560720 is an apocalyptic number.

It is an amenable number.

74560720 is an abundant number, since it is smaller than the sum of its proper divisors (112130456).

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

74560720 is a wasteful number, since it uses less digits than its factorization.

74560720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71719 (or 71713 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 74560720 is about 8634.8549495634. The cubic root of 74560720 is about 420.8913797220.

The spelling of 74560720 in words is "seventy-four million, five hundred sixty thousand, seven hundred twenty".