74569680 has 320 divisors, whose sum is σ = 285696000. Its totient is φ = 17791488.

The previous prime is 74569637. The next prime is 74569681. The reversal of 74569680 is 8696547.

74569680 is a `hidden beast` number, since 7 + 4 + 569 + 6 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74569681) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 943881 + ... + 943959.

It is an arithmetic number, because the mean of its divisors is an integer number (892800).

Almost surely, 2^74569680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74569680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142848000).

74569680 is an abundant number, since it is smaller than the sum of its proper divisors (211126320).

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

74569680 is a wasteful number, since it uses less digits than its factorization.

74569680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 74569680 is about 8635.3737614535. The cubic root of 74569680 is about 420.9082386245.

The spelling of 74569680 in words is "seventy-four million, five hundred sixty-nine thousand, six hundred eighty".