632365661 has 4 divisors (see below), whose sum is σ = 634425792. Its totient is φ = 630305532.

The previous prime is 632365633. The next prime is 632365663. The reversal of 632365661 is 166563236.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 632365661 - 2⁶ = 632365597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (632365663) 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, 1029605 + ... + 1030218.

It is an arithmetic number, because the mean of its divisors is an integer number (158606448).

Almost surely, 2^632365661 is an apocalyptic number.

It is an amenable number.

632365661 is a deficient number, since it is larger than the sum of its proper divisors (2060131).

632365661 is a wasteful number, since it uses less digits than its factorization.

632365661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060130.

The product of its digits is 116640, while the sum is 38.

The square root of 632365661 is about 25146.8817351178. The cubic root of 632365661 is about 858.3335590871. Note that the first 3 decimals are identical.

The spelling of 632365661 in words is "six hundred thirty-two million, three hundred sixty-five thousand, six hundred sixty-one".