191466660 has 96 divisors (see below), whose sum is σ = 668408832. Its totient is φ = 39784320.

The previous prime is 191466607. The next prime is 191466677. The reversal of 191466660 is 66664191.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16102 + ... + 25341.

It is an arithmetic number, because the mean of its divisors is an integer number (6962592).

Almost surely, 2^191466660 is an apocalyptic number.

191466660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191466660 is an abundant number, since it is smaller than the sum of its proper divisors (476942172).

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

191466660 is a wasteful number, since it uses less digits than its factorization.

191466660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41473 (or 41471 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 191466660 is about 13837.1478274968. The cubic root of 191466660 is about 576.3651595627.

The spelling of 191466660 in words is "one hundred ninety-one million, four hundred sixty-six thousand, six hundred sixty".