74484857 has 4 divisors (see below), whose sum is σ = 74606196. Its totient is φ = 74363520.

The previous prime is 74484853. The next prime is 74484863. The reversal of 74484857 is 75848447.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1142761 + 73342096 = 1069^2 + 8564^2 .

It is a cyclic number.

It is not a de Polignac number, because 74484857 - 2² = 74484853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74484853) 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, 59744 + ... + 60977.

It is an arithmetic number, because the mean of its divisors is an integer number (18651549).

Almost surely, 2^74484857 is an apocalyptic number.

It is an amenable number.

74484857 is a deficient number, since it is larger than the sum of its proper divisors (121339).

74484857 is a wasteful number, since it uses less digits than its factorization.

74484857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121338.

The product of its digits is 1003520, while the sum is 47.

The square root of 74484857 is about 8630.4609957985. The cubic root of 74484857 is about 420.7485837202.

The spelling of 74484857 in words is "seventy-four million, four hundred eighty-four thousand, eight hundred fifty-seven".