1166890 has 8 divisors (see below), whose sum is σ = 2100420. Its totient is φ = 466752.

The previous prime is 1166861. The next prime is 1166903. The reversal of 1166890 is 986611.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1108809 + 58081 = 1053^2 + 241^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58335 + ... + 58354.

2^1166890 is an apocalyptic number.

1166890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1166890 is a deficient number, since it is larger than the sum of its proper divisors (933530).

1166890 is a wasteful number, since it uses less digits than its factorization.

1166890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116696.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1166890 is about 1080.2268280320. The cubic root of 1166890 is about 105.2793769307.

The spelling of 1166890 in words is "one million, one hundred sixty-six thousand, eight hundred ninety".