432632661 has 4 divisors (see below), whose sum is σ = 576843552. Its totient is φ = 288421772.

The previous prime is 432632659. The next prime is 432632687. The reversal of 432632661 is 166236234.

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 432632661 - 2¹ = 432632659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432634661) 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, 72105441 + ... + 72105446.

It is an arithmetic number, because the mean of its divisors is an integer number (144210888).

Almost surely, 2^432632661 is an apocalyptic number.

It is an amenable number.

432632661 is a deficient number, since it is larger than the sum of its proper divisors (144210891).

432632661 is a wasteful number, since it uses less digits than its factorization.

432632661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144210890.

The product of its digits is 31104, while the sum is 33.

The square root of 432632661 is about 20799.8235809826. The cubic root of 432632661 is about 756.3214790621.

Adding to 432632661 its reverse (166236234), we get a palindrome (598868895).

The spelling of 432632661 in words is "four hundred thirty-two million, six hundred thirty-two thousand, six hundred sixty-one".