632809823 has 4 divisors (see below), whose sum is σ = 635216208. Its totient is φ = 630403440.

The previous prime is 632809813. The next prime is 632809843. The reversal of 632809823 is 328908236.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 632809823 - 2¹⁴ = 632793439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (632809813) 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, 1202798 + ... + 1203323.

It is an arithmetic number, because the mean of its divisors is an integer number (158804052).

Almost surely, 2^632809823 is an apocalyptic number.

632809823 is a deficient number, since it is larger than the sum of its proper divisors (2406385).

632809823 is a wasteful number, since it uses less digits than its factorization.

632809823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406384.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 632809823 is about 25155.7115383366. The cubic root of 632809823 is about 858.5344712861.

The spelling of 632809823 in words is "six hundred thirty-two million, eight hundred nine thousand, eight hundred twenty-three".