74688813 has 12 divisors (see below), whose sum is σ = 108012060. Its totient is φ = 49733376.

The previous prime is 74688811. The next prime is 74688821. The reversal of 74688813 is 31888647.

It can be written as a sum of positive squares in 2 ways, for example, as 8054244 + 66634569 = 2838^2 + 8163^2 .

It is not a de Polignac number, because 74688813 - 2¹ = 74688811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74688811) 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, 3895 + ... + 12827.

It is an arithmetic number, because the mean of its divisors is an integer number (9001005).

Almost surely, 2^74688813 is an apocalyptic number.

It is an amenable number.

74688813 is a deficient number, since it is larger than the sum of its proper divisors (33323247).

74688813 is a wasteful number, since it uses less digits than its factorization.

74688813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9868 (or 9865 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 74688813 is about 8642.2689729029. The cubic root of 74688813 is about 421.1322679323.

The spelling of 74688813 in words is "seventy-four million, six hundred eighty-eight thousand, eight hundred thirteen".