74140647 has 8 divisors (see below), whose sum is σ = 112976256. Its totient is φ = 42366072.

The previous prime is 74140613. The next prime is 74140673. The reversal of 74140647 is 74604147.

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

It is not a de Polignac number, because 74140647 - 2¹⁹ = 73616359 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74140687) 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, 1765233 + ... + 1765274.

It is an arithmetic number, because the mean of its divisors is an integer number (14122032).

Almost surely, 2^74140647 is an apocalyptic number.

74140647 is a deficient number, since it is larger than the sum of its proper divisors (38835609).

74140647 is a wasteful number, since it uses less digits than its factorization.

74140647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530517.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 74140647 is about 8610.4963271579. The cubic root of 74140647 is about 420.0994605718.

The spelling of 74140647 in words is "seventy-four million, one hundred forty thousand, six hundred forty-seven".