159666810 has 16 divisors (see below), whose sum is σ = 383200416. Its totient is φ = 42577808.

The previous prime is 159666809. The next prime is 159666847. The reversal of 159666810 is 18666951.

It is a happy number.

It is a super-2 number, since 2×159666810² = 50986980431152200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2661084 + ... + 2661143.

It is an arithmetic number, because the mean of its divisors is an integer number (23950026).

Almost surely, 2^159666810 is an apocalyptic number.

159666810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

159666810 is an abundant number, since it is smaller than the sum of its proper divisors (223533606).

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

159666810 is a wasteful number, since it uses less digits than its factorization.

159666810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5322237.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 159666810 is about 12635.9332856738. The cubic root of 159666810 is about 542.5064210981.

The spelling of 159666810 in words is "one hundred fifty-nine million, six hundred sixty-six thousand, eight hundred ten".