74569447 has 8 divisors (see below), whose sum is σ = 76995072. Its totient is φ = 72172800.

The previous prime is 74569423. The next prime is 74569457. The reversal of 74569447 is 74496547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74569447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74569397 and 74569406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74569457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1954 + ... + 12367.

It is an arithmetic number, because the mean of its divisors is an integer number (9624384).

Almost surely, 2^74569447 is an apocalyptic number.

74569447 is a deficient number, since it is larger than the sum of its proper divisors (2425625).

74569447 is a wasteful number, since it uses less digits than its factorization.

74569447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14489.

The product of its digits is 846720, while the sum is 46.

The square root of 74569447 is about 8635.3602704230. The cubic root of 74569447 is about 420.9078002349.

Subtracting from 74569447 its reverse (74496547), we obtain a square (72900 = 270²).

The spelling of 74569447 in words is "seventy-four million, five hundred sixty-nine thousand, four hundred forty-seven".