74644100 has 36 divisors (see below), whose sum is σ = 163572864. Its totient is φ = 29563680.

The previous prime is 74644099. The next prime is 74644109. The reversal of 74644100 is 144647.

It is a self number, because there is not a number n which added to its sum of digits gives 74644100.

It is not an unprimeable number, because it can be changed into a prime (74644109) 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 11 ways as a sum of consecutive naturals, for example, 6677 + ... + 13923.

Almost surely, 2^74644100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74644100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81786432).

74644100 is an abundant number, since it is smaller than the sum of its proper divisors (88928764).

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

74644100 is a wasteful number, since it uses less digits than its factorization.

74644100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7364 (or 7357 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 74644100 is about 8639.6817071001. The cubic root of 74644100 is about 421.0482131938.

Adding to 74644100 its reverse (144647), we get a palindrome (74788747).

The spelling of 74644100 in words is "seventy-four million, six hundred forty-four thousand, one hundred".