633968890761 has 8 divisors (see below), whose sum is σ = 846985828000. Its totient is φ = 421798940352.

The previous prime is 633968890733. The next prime is 633968890787. The reversal of 633968890761 is 167098869336.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 633968890761 - 2⁵ = 633968890729 is a prime.

It is a super-3 number, since 3×633968890761³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 633968890692 and 633968890701.

It is not an unprimeable number, because it can be changed into a prime (633968890361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211744960 + ... + 211747953.

It is an arithmetic number, because the mean of its divisors is an integer number (105873228500).

Almost surely, 2^633968890761 is an apocalyptic number.

It is an amenable number.

633968890761 is a deficient number, since it is larger than the sum of its proper divisors (213016937239).

633968890761 is a wasteful number, since it uses less digits than its factorization.

633968890761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423493415.

The product of its (nonzero) digits is 70543872, while the sum is 66.

The spelling of 633968890761 in words is "six hundred thirty-three billion, nine hundred sixty-eight million, eight hundred ninety thousand, seven hundred sixty-one".