1668270855 has 16 divisors (see below), whose sum is σ = 2709074304. Its totient is φ = 876464160.

The previous prime is 1668270839. The next prime is 1668270881. The reversal of 1668270855 is 5580728661.

It is not a de Polignac number, because 1668270855 - 2⁴ = 1668270839 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 828981 + ... + 830990.

It is an arithmetic number, because the mean of its divisors is an integer number (169317144).

Almost surely, 2^1668270855 is an apocalyptic number.

1668270855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1668270855 is a deficient number, since it is larger than the sum of its proper divisors (1040803449).

1668270855 is a wasteful number, since it uses less digits than its factorization.

1668270855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660046.

The product of its (nonzero) digits is 806400, while the sum is 48.

The square root of 1668270855 is about 40844.4715353253. The cubic root of 1668270855 is about 1186.0113746330.

The spelling of 1668270855 in words is "one billion, six hundred sixty-eight million, two hundred seventy thousand, eight hundred fifty-five".