74642271 has 8 divisors (see below), whose sum is σ = 108570624. Its totient is φ = 45237720.

The previous prime is 74642233. The next prime is 74642299. The reversal of 74642271 is 17224647.

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

It is not a de Polignac number, because 74642271 - 2⁶ = 74642207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2261887 = 74642271 / (7 + 4 + 6 + 4 + 2 + 2 + 7 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74642231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1130911 + ... + 1130976.

It is an arithmetic number, because the mean of its divisors is an integer number (13571328).

Almost surely, 2^74642271 is an apocalyptic number.

74642271 is a deficient number, since it is larger than the sum of its proper divisors (33928353).

74642271 is a wasteful number, since it uses less digits than its factorization.

74642271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2261901.

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

The square root of 74642271 is about 8639.5758576449. The cubic root of 74642271 is about 421.0447741925.

The spelling of 74642271 in words is "seventy-four million, six hundred forty-two thousand, two hundred seventy-one".