1266190 has 16 divisors (see below), whose sum is σ = 2299392. Its totient is φ = 501984.

The previous prime is 1266163. The next prime is 1266191. The reversal of 1266190 is 916621.

It is a super-2 number, since 2×1266190² = 3206474232200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266191) 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, 772 + ... + 1768.

It is an arithmetic number, because the mean of its divisors is an integer number (143712).

2^1266190 is an apocalyptic number.

1266190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266190 is a deficient number, since it is larger than the sum of its proper divisors (1033202).

1266190 is a wasteful number, since it uses less digits than its factorization.

1266190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1266190 is about 1125.2510830921. The cubic root of 1266190 is about 108.1848115959.

The spelling of 1266190 in words is "one million, two hundred sixty-six thousand, one hundred ninety".