10618986 has 48 divisors (see below), whose sum is σ = 26019360. Its totient is φ = 2872800.

The previous prime is 10618981. The next prime is 10619003. The reversal of 10618986 is 68981601.

It is a super-2 number, since 2×10618986² = 225525727336392, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10618981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4636 + ... + 6536.

It is an arithmetic number, because the mean of its divisors is an integer number (542070).

Almost surely, 2^10618986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10618986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13009680).

10618986 is an abundant number, since it is smaller than the sum of its proper divisors (15400374).

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

10618986 is a wasteful number, since it uses less digits than its factorization.

10618986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939 (or 1932 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 10618986 is about 3258.6785665358. The cubic root of 10618986 is about 219.7999972954.

The spelling of 10618986 in words is "ten million, six hundred eighteen thousand, nine hundred eighty-six".