632666801 has 8 divisors (see below), whose sum is σ = 681533160. Its totient is φ = 583828992.

The previous prime is 632666791. The next prime is 632666809. The reversal of 632666801 is 108666236.

It can be written as a sum of positive squares in 4 ways, for example, as 27457600 + 605209201 = 5240^2 + 24601^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-632666801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (632666809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69185 + ... + 77793.

It is an arithmetic number, because the mean of its divisors is an integer number (85191645).

Almost surely, 2^632666801 is an apocalyptic number.

It is an amenable number.

632666801 is a deficient number, since it is larger than the sum of its proper divisors (48866359).

632666801 is a wasteful number, since it uses less digits than its factorization.

632666801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14275.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 632666801 is about 25152.8686435563. The cubic root of 632666801 is about 858.4697869927.

The spelling of 632666801 in words is "six hundred thirty-two million, six hundred sixty-six thousand, eight hundred one".