1080665806 has 32 divisors (see below), whose sum is σ = 1795322880. Its totient is φ = 483756000.

The previous prime is 1080665801. The next prime is 1080665821. The reversal of 1080665806 is 6085660801.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080665801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1217895 + ... + 1218781.

It is an arithmetic number, because the mean of its divisors is an integer number (56103840).

Almost surely, 2^1080665806 is an apocalyptic number.

1080665806 is a deficient number, since it is larger than the sum of its proper divisors (714657074).

1080665806 is a wasteful number, since it uses less digits than its factorization.

1080665806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 1080665806 is about 32873.4818052484. The cubic root of 1080665806 is about 1026.1963602960.

The spelling of 1080665806 in words is "one billion, eighty million, six hundred sixty-five thousand, eight hundred six".