74047871 has 4 divisors (see below), whose sum is σ = 76436544. Its totient is φ = 71659200.

The previous prime is 74047843. The next prime is 74047873. The reversal of 74047871 is 17874047.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74047871 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 (74047873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1194290 + ... + 1194351.

It is an arithmetic number, because the mean of its divisors is an integer number (19109136).

Almost surely, 2^74047871 is an apocalyptic number.

74047871 is a deficient number, since it is larger than the sum of its proper divisors (2388673).

74047871 is a wasteful number, since it uses less digits than its factorization.

74047871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388672.

The product of its (nonzero) digits is 43904, while the sum is 38.

The square root of 74047871 is about 8605.1072625505. The cubic root of 74047871 is about 419.9241567511.

The spelling of 74047871 in words is "seventy-four million, forty-seven thousand, eight hundred seventy-one".