74772047 has 8 divisors (see below), whose sum is σ = 85773600. Its totient is φ = 63850464.

The previous prime is 74772043. The next prime is 74772053. The reversal of 74772047 is 74027747.

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

It is a cyclic number.

It is not a de Polignac number, because 74772047 - 2² = 74772043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74772047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74772041) 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, 17972 + ... + 21737.

It is an arithmetic number, because the mean of its divisors is an integer number (10721700).

Almost surely, 2^74772047 is an apocalyptic number.

74772047 is a deficient number, since it is larger than the sum of its proper divisors (11001553).

74772047 is a wasteful number, since it uses less digits than its factorization.

74772047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39985.

The product of its (nonzero) digits is 76832, while the sum is 38.

The square root of 74772047 is about 8647.0831498257. The cubic root of 74772047 is about 421.2886479347.

The spelling of 74772047 in words is "seventy-four million, seven hundred seventy-two thousand, forty-seven".