74756213 has 6 divisors (see below), whose sum is σ = 86961366. Its totient is φ = 64076712.

The previous prime is 74756207. The next prime is 74756219. The reversal of 74756213 is 31265747.

It is an interprime number because it is at equal distance from previous prime (74756207) and next prime (74756219).

It can be written as a sum of positive squares in only one way, i.e., 42289009 + 32467204 = 6503^2 + 5698^2 .

It is not a de Polignac number, because 74756213 - 2⁴ = 74756197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74756219) 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 5 ways as a sum of consecutive naturals, for example, 762770 + ... + 762867.

It is an arithmetic number, because the mean of its divisors is an integer number (14493561).

Almost surely, 2^74756213 is an apocalyptic number.

It is an amenable number.

74756213 is a deficient number, since it is larger than the sum of its proper divisors (12205153).

74756213 is a wasteful number, since it uses less digits than its factorization.

74756213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525651 (or 1525644 counting only the distinct ones).

The product of its digits is 35280, while the sum is 35.

The square root of 74756213 is about 8646.1675324967. The cubic root of 74756213 is about 421.2589079644.

The spelling of 74756213 in words is "seventy-four million, seven hundred fifty-six thousand, two hundred thirteen".