618956 has 12 divisors (see below), whose sum is σ = 1166592. Its totient is φ = 285648.

The previous prime is 618941. The next prime is 618971. The reversal of 618956 is 659816.

618956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (618941) and next prime (618971).

It is an unprimeable number.

618956 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5900 + ... + 6003.

It is an arithmetic number, because the mean of its divisors is an integer number (97216).

2⁶¹⁸⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

618956 is a deficient number, since it is larger than the sum of its proper divisors (547636).

618956 is a wasteful number, since it uses less digits than its factorization.

618956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11920 (or 11918 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The square root of 618956 is about 786.7375674264. The cubic root of 618956 is about 85.2223016112. Note that the first 3 decimals are identical.

The spelling of 618956 in words is "six hundred eighteen thousand, nine hundred fifty-six".