74500447 has 8 divisors (see below), whose sum is σ = 85716000. Its totient is φ = 63428064.

The previous prime is 74500441. The next prime is 74500451. The reversal of 74500447 is 74400547.

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

It is not a de Polignac number, because 74500447 - 2⁷ = 74500319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74500441) 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, 34672 + ... + 36757.

It is an arithmetic number, because the mean of its divisors is an integer number (10714500).

Almost surely, 2^74500447 is an apocalyptic number.

74500447 is a deficient number, since it is larger than the sum of its proper divisors (11215553).

74500447 is a wasteful number, since it uses less digits than its factorization.

74500447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71585.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 74500447 is about 8631.3641447919. The cubic root of 74500447 is about 420.7779365001. Note that the first 3 decimals are identical.

It can be divided in two parts, 74500 and 447, that added together give a palindrome (74947).

The spelling of 74500447 in words is "seventy-four million, five hundred thousand, four hundred forty-seven".