74356857 has 12 divisors (see below), whose sum is σ = 108391140. Its totient is φ = 49115808.

The previous prime is 74356853. The next prime is 74356871. The reversal of 74356857 is 75865347.

It can be written as a sum of positive squares in 2 ways, for example, as 53890281 + 20466576 = 7341^2 + 4524^2 .

It is not a de Polignac number, because 74356857 - 2² = 74356853 is a prime.

It is a super-3 number, since 3×74356857³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (74356853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36918 + ... + 38879.

It is an arithmetic number, because the mean of its divisors is an integer number (9032595).

Almost surely, 2^74356857 is an apocalyptic number.

It is an amenable number.

74356857 is a deficient number, since it is larger than the sum of its proper divisors (34034283).

74356857 is a wasteful number, since it uses less digits than its factorization.

74356857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75912 (or 75909 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 74356857 is about 8623.0422125837. The cubic root of 74356857 is about 420.5074309086.

It can be divided in two parts, 743 and 56857, that added together give a square (57600 = 240²).

The spelling of 74356857 in words is "seventy-four million, three hundred fifty-six thousand, eight hundred fifty-seven".