1066656141 has 16 divisors (see below), whose sum is σ = 1586390400. Its totient is φ = 708332544.

The previous prime is 1066656131. The next prime is 1066656169. The reversal of 1066656141 is 1416566601.

It is a happy number.

It is not a de Polignac number, because 1066656141 - 2⁶ = 1066656077 is a prime.

It is a super-2 number, since 2×1066656141² = 2275510646266023762, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1066656096 and 1066656105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066656131) 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, 69921 + ... + 83798.

It is an arithmetic number, because the mean of its divisors is an integer number (99149400).

Almost surely, 2^1066656141 is an apocalyptic number.

It is an amenable number.

1066656141 is a deficient number, since it is larger than the sum of its proper divisors (519734259).

1066656141 is a wasteful number, since it uses less digits than its factorization.

1066656141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153985 (or 153979 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1066656141 is about 32659.7020960082. The cubic root of 1066656141 is about 1021.7425490480.

It can be divided in two parts, 1066656 and 141, that multiplied together give a triangular number (150398496 = T₁₇₃₄₃).

The spelling of 1066656141 in words is "one billion, sixty-six million, six hundred fifty-six thousand, one hundred forty-one".