633426894 has 48 divisors (see below), whose sum is σ = 1407998592. Its totient is φ = 205695504.

The previous prime is 633426887. The next prime is 633426901. The reversal of 633426894 is 498624336.

633426894 is a `hidden beast` number, since 633 + 4 + 2 + 6 + 8 + 9 + 4 = 666.

633426894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (633426887) and next prime (633426901).

It is a super-3 number, since 3×633426894³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 388509 + ... + 390135.

It is an arithmetic number, because the mean of its divisors is an integer number (29333304).

Almost surely, 2^633426894 is an apocalyptic number.

633426894 is an abundant number, since it is smaller than the sum of its proper divisors (774571698).

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

633426894 is a wasteful number, since it uses less digits than its factorization.

633426894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181 (or 2178 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 633426894 is about 25167.9735775449. The cubic root of 633426894 is about 858.8134411538.

The spelling of 633426894 in words is "six hundred thirty-three million, four hundred twenty-six thousand, eight hundred ninety-four".