744630894 has 80 divisors (see below), whose sum is σ = 1921205088. Its totient is φ = 211154688.

The previous prime is 744630857. The next prime is 744630899. The reversal of 744630894 is 498036447.

744630894 is a `hidden beast` number, since 7 + 4 + 4 + 630 + 8 + 9 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744630899) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 152962 + ... + 157754.

Almost surely, 2^744630894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 744630894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (960602544).

744630894 is an abundant number, since it is smaller than the sum of its proper divisors (1176574194).

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

744630894 is a wasteful number, since it uses less digits than its factorization.

744630894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4951 (or 4942 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 744630894 is about 27287.9257914558. The cubic root of 744630894 is about 906.3870325706.

The spelling of 744630894 in words is "seven hundred forty-four million, six hundred thirty thousand, eight hundred ninety-four".