1966290 has 16 divisors (see below), whose sum is σ = 4719168. Its totient is φ = 524336.

The previous prime is 1966259. The next prime is 1966297. The reversal of 1966290 is 926691.

It is a happy number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1966297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32742 + ... + 32801.

It is an arithmetic number, because the mean of its divisors is an integer number (294948).

2^1966290 is an apocalyptic number.

1966290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1966290 is an abundant number, since it is smaller than the sum of its proper divisors (2752878).

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

1966290 is a wasteful number, since it uses less digits than its factorization.

1966290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65553.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1966290 is about 1402.2446291571. The cubic root of 1966290 is about 125.2802246570.

The spelling of 1966290 in words is "one million, nine hundred sixty-six thousand, two hundred ninety".