1072166660 has 12 divisors (see below), whose sum is σ = 2251550028. Its totient is φ = 428866656.

The previous prime is 1072166657. The next prime is 1072166671. The reversal of 1072166660 is 666612701.

It can be written as a sum of positive squares in 2 ways, for example, as 594481924 + 477684736 = 24382^2 + 21856^2 .

It is a super-2 number, since 2×1072166660² = 2299082693631111200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1072166660.

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, 26804147 + ... + 26804186.

It is an arithmetic number, because the mean of its divisors is an integer number (187629169).

Almost surely, 2^1072166660 is an apocalyptic number.

1072166660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1072166660 is an abundant number, since it is smaller than the sum of its proper divisors (1179383368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1072166660 is a wasteful number, since it uses less digits than its factorization.

1072166660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53608342 (or 53608340 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 1072166660 is about 32743.9560835278. The cubic root of 1072166660 is about 1023.4990237948.

The spelling of 1072166660 in words is "one billion, seventy-two million, one hundred sixty-six thousand, six hundred sixty".