74355813 has 36 divisors (see below), whose sum is σ = 127539360. Its totient is φ = 42462792.

The previous prime is 74355811. The next prime is 74355823. The reversal of 74355813 is 31855347.

74355813 is a `hidden beast` number, since 74 + 3 + 5 + 581 + 3 = 666.

It is not a de Polignac number, because 74355813 - 2¹ = 74355811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74355811) 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 35 ways as a sum of consecutive naturals, for example, 45118 + ... + 46736.

It is an arithmetic number, because the mean of its divisors is an integer number (3542760).

Almost surely, 2^74355813 is an apocalyptic number.

It is an amenable number.

74355813 is a deficient number, since it is larger than the sum of its proper divisors (53183547).

74355813 is an frugal number, since it uses more digits than its factorization.

74355813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650 (or 1629 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 74355813 is about 8622.9816768911. The cubic root of 74355813 is about 420.5054628686.

The spelling of 74355813 in words is "seventy-four million, three hundred fifty-five thousand, eight hundred thirteen".