632616161 has 8 divisors (see below), whose sum is σ = 641686848. Its totient is φ = 623610000.

The previous prime is 632616139. The next prime is 632616181. The reversal of 632616161 is 161616236.

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-632616161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (632616181) 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, 3791 + ... + 35771.

It is an arithmetic number, because the mean of its divisors is an integer number (80210856).

Almost surely, 2^632616161 is an apocalyptic number.

It is an amenable number.

632616161 is a deficient number, since it is larger than the sum of its proper divisors (9070687).

632616161 is a wasteful number, since it uses less digits than its factorization.

632616161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32263.

The product of its digits is 7776, while the sum is 32.

The square root of 632616161 is about 25151.8619787880. The cubic root of 632616161 is about 858.4468817973.

The spelling of 632616161 in words is "six hundred thirty-two million, six hundred sixteen thousand, one hundred sixty-one".