633878061 has 8 divisors (see below), whose sum is σ = 845763840. Its totient is φ = 422288832.

The previous prime is 633878051. The next prime is 633878071. The reversal of 633878061 is 160878336.

It is an interprime number because it is at equal distance from previous prime (633878051) and next prime (633878071).

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

It is not a de Polignac number, because 633878061 - 2⁵ = 633878029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (633878051) 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, 69100 + ... + 77733.

It is an arithmetic number, because the mean of its divisors is an integer number (105720480).

Almost surely, 2^633878061 is an apocalyptic number.

It is an amenable number.

633878061 is a deficient number, since it is larger than the sum of its proper divisors (211885779).

633878061 is a wasteful number, since it uses less digits than its factorization.

633878061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148275.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 633878061 is about 25176.9350994119. The cubic root of 633878061 is about 859.0172933166.

The spelling of 633878061 in words is "six hundred thirty-three million, eight hundred seventy-eight thousand, sixty-one".