1090666906 has 8 divisors (see below), whose sum is σ = 1869714720. Its totient is φ = 467428668.

The previous prime is 1090666903. The next prime is 1090666957. The reversal of 1090666906 is 6096660901.

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

It is a super-2 number, since 2×1090666906² = 2379108599687225672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1090666903) 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, 38952376 + ... + 38952403.

It is an arithmetic number, because the mean of its divisors is an integer number (233714340).

Almost surely, 2^1090666906 is an apocalyptic number.

1090666906 is a deficient number, since it is larger than the sum of its proper divisors (779047814).

1090666906 is an equidigital number, since it uses as much as digits as its factorization.

1090666906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77904788.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 1090666906 is about 33025.2464941596. The cubic root of 1090666906 is about 1029.3523140811.

The spelling of 1090666906 in words is "one billion, ninety million, six hundred sixty-six thousand, nine hundred six".