633918340 has 24 divisors (see below), whose sum is σ = 1452249792. Its totient is φ = 230515680.

The previous prime is 633918331. The next prime is 633918347. The reversal of 633918340 is 43819336.

It is a self number, because there is not a number n which added to its sum of digits gives 633918340.

It is not an unprimeable number, because it can be changed into a prime (633918347) 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 7 ways as a sum of consecutive naturals, for example, 1440504 + ... + 1440943.

It is an arithmetic number, because the mean of its divisors is an integer number (60510408).

Almost surely, 2^633918340 is an apocalyptic number.

It is an amenable number.

633918340 is an abundant number, since it is smaller than the sum of its proper divisors (818331452).

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

633918340 is a wasteful number, since it uses less digits than its factorization.

633918340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881467 (or 2881465 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 633918340 is about 25177.7350053574. The cubic root of 633918340 is about 859.0354879963.

The spelling of 633918340 in words is "six hundred thirty-three million, nine hundred eighteen thousand, three hundred forty".