74945217 has 8 divisors (see below), whose sum is σ = 100038240. Its totient is φ = 49907840.

The previous prime is 74945203. The next prime is 74945219. The reversal of 74945217 is 71254947.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74945217 - 2¹⁰ = 74944193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74945219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10659 + ... + 16232.

It is an arithmetic number, because the mean of its divisors is an integer number (12504780).

Almost surely, 2^74945217 is an apocalyptic number.

It is an amenable number.

74945217 is a deficient number, since it is larger than the sum of its proper divisors (25093023).

74945217 is a wasteful number, since it uses less digits than its factorization.

74945217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27823.

The product of its digits is 70560, while the sum is 39.

The square root of 74945217 is about 8657.0905620768. The cubic root of 74945217 is about 421.6136281476.

The spelling of 74945217 in words is "seventy-four million, nine hundred forty-five thousand, two hundred seventeen".