74746213 has 4 divisors (see below), whose sum is σ = 74770668. Its totient is φ = 74721760.

The previous prime is 74746153. The next prime is 74746219. The reversal of 74746213 is 31264747.

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 47361924 + 27384289 = 6882^2 + 5233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74746213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74746219) 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, 6856 + ... + 14017.

It is an arithmetic number, because the mean of its divisors is an integer number (18692667).

Almost surely, 2^74746213 is an apocalyptic number.

It is an amenable number.

74746213 is a deficient number, since it is larger than the sum of its proper divisors (24455).

74746213 is a wasteful number, since it uses less digits than its factorization.

74746213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24454.

The product of its digits is 28224, while the sum is 34.

The square root of 74746213 is about 8645.5892222566. The cubic root of 74746213 is about 421.2401234524.

The spelling of 74746213 in words is "seventy-four million, seven hundred forty-six thousand, two hundred thirteen".