166140086 has 24 divisors (see below), whose sum is σ = 302505840. Its totient is φ = 68106192.

The previous prime is 166140059. The next prime is 166140097. The reversal of 166140086 is 680041661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34601 + ... + 39108.

It is an arithmetic number, because the mean of its divisors is an integer number (12604410).

Almost surely, 2^166140086 is an apocalyptic number.

166140086 is a deficient number, since it is larger than the sum of its proper divisors (136365754).

166140086 is a wasteful number, since it uses less digits than its factorization.

166140086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73748 (or 73741 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 166140086 is about 12889.5339714049. The cubic root of 166140086 is about 549.7410196700.

The spelling of 166140086 in words is "one hundred sixty-six million, one hundred forty thousand, eighty-six".