74857407 has 4 divisors (see below), whose sum is σ = 99809880. Its totient is φ = 49904936.

The previous prime is 74857403. The next prime is 74857421. The reversal of 74857407 is 70475847.

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

It is a cyclic number.

It is not a de Polignac number, because 74857407 - 2² = 74857403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74857403) 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, 12476232 + ... + 12476237.

It is an arithmetic number, because the mean of its divisors is an integer number (24952470).

Almost surely, 2^74857407 is an apocalyptic number.

74857407 is a deficient number, since it is larger than the sum of its proper divisors (24952473).

74857407 is a wasteful number, since it uses less digits than its factorization.

74857407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24952472.

The product of its (nonzero) digits is 219520, while the sum is 42.

The square root of 74857407 is about 8652.0175103845. The cubic root of 74857407 is about 421.4489017757.

The spelling of 74857407 in words is "seventy-four million, eight hundred fifty-seven thousand, four hundred seven".