1066606140 has 48 divisors (see below), whose sum is σ = 3116348928. Its totient is φ = 272061504.

The previous prime is 1066606133. The next prime is 1066606153. The reversal of 1066606140 is 416066601.

It is a super-2 number, since 2×1066606140² = 2275297315771399200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1066606098 and 1066606107.

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, 385072 + ... + 387831.

It is an arithmetic number, because the mean of its divisors is an integer number (64923936).

Almost surely, 2^1066606140 is an apocalyptic number.

1066606140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1066606140 is an abundant number, since it is smaller than the sum of its proper divisors (2049742788).

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

1066606140 is a wasteful number, since it uses less digits than its factorization.

1066606140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772938 (or 772936 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1066606140 is about 32658.9366024064. The cubic root of 1066606140 is about 1021.7265835944.

The spelling of 1066606140 in words is "one billion, sixty-six million, six hundred six thousand, one hundred forty".