74506257 has 32 divisors (see below), whose sum is σ = 133574400. Its totient is φ = 40068864.

The previous prime is 74506253. The next prime is 74506273. The reversal of 74506257 is 75260547.

It is not a de Polignac number, because 74506257 - 2² = 74506253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74506253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8382 + ... + 14807.

It is an arithmetic number, because the mean of its divisors is an integer number (4174200).

Almost surely, 2^74506257 is an apocalyptic number.

It is an amenable number.

74506257 is a deficient number, since it is larger than the sum of its proper divisors (59068143).

74506257 is a wasteful number, since it uses less digits than its factorization.

74506257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23222 (or 23216 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 74506257 is about 8631.7007014840. The cubic root of 74506257 is about 420.7888744938.

The spelling of 74506257 in words is "seventy-four million, five hundred six thousand, two hundred fifty-seven".