1966386 has 32 divisors (see below), whose sum is σ = 4239360. Its totient is φ = 606096.

The previous prime is 1966381. The next prime is 1966387. The reversal of 1966386 is 6836691.

It is a happy number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1966381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5175 + ... + 5541.

It is an arithmetic number, because the mean of its divisors is an integer number (132480).

2^1966386 is an apocalyptic number.

1966386 is an abundant number, since it is smaller than the sum of its proper divisors (2272974).

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

1966386 is a wasteful number, since it uses less digits than its factorization.

1966386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438.

The product of its digits is 46656, while the sum is 39.

The square root of 1966386 is about 1402.2788595711. The cubic root of 1966386 is about 125.2822634722.

The spelling of 1966386 in words is "one million, nine hundred sixty-six thousand, three hundred eighty-six".