618632 has 16 divisors (see below), whose sum is σ = 1325760. Its totient is φ = 265104.

The previous prime is 618619. The next prime is 618637. The reversal of 618632 is 236816.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (618637) by changing a digit.

618632 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5468 + ... + 5579.

It is an arithmetic number, because the mean of its divisors is an integer number (82860).

2⁶¹⁸⁶³² is an apocalyptic number.

It is an amenable number.

618632 is an abundant number, since it is smaller than the sum of its proper divisors (707128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618632 is a wasteful number, since it uses less digits than its factorization.

618632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11060 (or 11056 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 618632 is about 786.5316268276. The cubic root of 618632 is about 85.2074288011.

The spelling of 618632 in words is "six hundred eighteen thousand, six hundred thirty-two".