74636412 has 12 divisors (see below), whose sum is σ = 174151656. Its totient is φ = 24878800.

The previous prime is 74636411. The next prime is 74636413. The reversal of 74636412 is 21463647.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (74636411) and next prime (74636413).

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74636411) 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, 3109839 + ... + 3109862.

It is an arithmetic number, because the mean of its divisors is an integer number (14512638).

Almost surely, 2^74636412 is an apocalyptic number.

It is an amenable number.

74636412 is an abundant number, since it is smaller than the sum of its proper divisors (99515244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74636412 is a wasteful number, since it uses less digits than its factorization.

74636412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6219708 (or 6219706 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 74636412 is about 8639.2367718451. The cubic root of 74636412 is about 421.0337573524.

The spelling of 74636412 in words is "seventy-four million, six hundred thirty-six thousand, four hundred twelve".