74455560 has 48 divisors (see below), whose sum is σ = 241981740. Its totient is φ = 19854720.

The previous prime is 74455519. The next prime is 74455561. The reversal of 74455560 is 6555447.

It is a happy number.

74455560 is a `hidden beast` number, since 7 + 44 + 55 + 560 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 73719396 + 736164 = 8586^2 + 858^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (74455561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103051 + ... + 103770.

Almost surely, 2^74455560 is an apocalyptic number.

It is an amenable number.

74455560 is an abundant number, since it is smaller than the sum of its proper divisors (167526180).

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

74455560 is a wasteful number, since it uses less digits than its factorization.

74455560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206838 (or 206831 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 74455560 is about 8628.7635267169. The cubic root of 74455560 is about 420.6934123818.

The spelling of 74455560 in words is "seventy-four million, four hundred fifty-five thousand, five hundred sixty".