1201986 has 16 divisors (see below), whose sum is σ = 2671200. Its totient is φ = 400644.

The previous prime is 1201969. The next prime is 1201999. The reversal of 1201986 is 6891021.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11076 + ... + 11183.

It is an arithmetic number, because the mean of its divisors is an integer number (166950).

2^1201986 is an apocalyptic number.

1201986 is an abundant number, since it is smaller than the sum of its proper divisors (1469214).

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

1201986 is a wasteful number, since it uses less digits than its factorization.

1201986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22270 (or 22264 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1201986 is about 1096.3512210966. The cubic root of 1201986 is about 106.3244479385.

It can be divided in two parts, 1201 and 986, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1201986 in words is "one million, two hundred one thousand, nine hundred eighty-six".