1290566 has 8 divisors (see below), whose sum is σ = 1968840. Its totient is φ = 634288.

The previous prime is 1290563. The next prime is 1290571. The reversal of 1290566 is 6650921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5351 + ... + 5586.

It is an arithmetic number, because the mean of its divisors is an integer number (246105).

2^1290566 is an apocalyptic number.

1290566 is a deficient number, since it is larger than the sum of its proper divisors (678274).

1290566 is a wasteful number, since it uses less digits than its factorization.

1290566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10998.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1290566 is about 1136.0308094414. The cubic root of 1290566 is about 108.8746419573.

The spelling of 1290566 in words is "one million, two hundred ninety thousand, five hundred sixty-six".