618966 has 24 divisors (see below), whose sum is σ = 1356264. Its totient is φ = 204000.

The previous prime is 618941. The next prime is 618971. The reversal of 618966 is 669816.

It is a d-powerful number, because it can be written as 6² + 1 + 9⁵ + 8 + 6⁷ + 6⁷ .

It is a self number, because there is not a number n which added to its sum of digits gives 618966.

It is a congruent number.

It is an unprimeable number.

618966 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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2341 + ... + 2591.

It is an arithmetic number, because the mean of its divisors is an integer number (56511).

2⁶¹⁸⁹⁶⁶ is an apocalyptic number.

618966 is an abundant number, since it is smaller than the sum of its proper divisors (737298).

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

618966 is a wasteful number, since it uses less digits than its factorization.

618966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 393 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 618966 is about 786.7439227601. The cubic root of 618966 is about 85.2227605660. Note that the first 3 decimals are identical.

The spelling of 618966 in words is "six hundred eighteen thousand, nine hundred sixty-six".