633990680 has 16 divisors (see below), whose sum is σ = 1426479120. Its totient is φ = 253596256.

The previous prime is 633990677. The next prime is 633990683. The reversal of 633990680 is 86099336.

633990680 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 (633990677) and next prime (633990683).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (633990683) 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, 7924844 + ... + 7924923.

It is an arithmetic number, because the mean of its divisors is an integer number (89154945).

Almost surely, 2^633990680 is an apocalyptic number.

It is an amenable number.

633990680 is an abundant number, since it is smaller than the sum of its proper divisors (792488440).

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

633990680 is a wasteful number, since it uses less digits than its factorization.

633990680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15849778 (or 15849774 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 633990680 is about 25179.1715511055. The cubic root of 633990680 is about 859.0681632162.

The spelling of 633990680 in words is "six hundred thirty-three million, nine hundred ninety thousand, six hundred eighty".