566706671661 has 32 divisors (see below), whose sum is σ = 854321836032. Its totient is φ = 331533259200.

The previous prime is 566706671653. The next prime is 566706671681. The reversal of 566706671661 is 166176607665.

It is not a de Polignac number, because 566706671661 - 2³ = 566706671653 is a prime.

It is a super-3 number, since 3×566706671661³ (a number of 36 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566706671611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1791765 + ... + 2084186.

It is an arithmetic number, because the mean of its divisors is an integer number (26697557376).

Almost surely, 2^566706671661 is an apocalyptic number.

It is an amenable number.

566706671661 is a deficient number, since it is larger than the sum of its proper divisors (287615164371).

566706671661 is a wasteful number, since it uses less digits than its factorization.

566706671661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876153.

The product of its (nonzero) digits is 11430720, while the sum is 57.

The spelling of 566706671661 in words is "five hundred sixty-six billion, seven hundred six million, six hundred seventy-one thousand, six hundred sixty-one".