166060665 has 64 divisors (see below), whose sum is σ = 314323200. Its totient is φ = 82944000.

The previous prime is 166060637. The next prime is 166060679. The reversal of 166060665 is 566060661.

It is not a de Polignac number, because 166060665 - 2¹⁶ = 165995129 is a prime.

It is a super-2 number, since 2×166060665² = 55152288920484450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 258745 + ... + 259385.

It is an arithmetic number, because the mean of its divisors is an integer number (4911300).

Almost surely, 2^166060665 is an apocalyptic number.

166060665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166060665 is a deficient number, since it is larger than the sum of its proper divisors (148262535).

166060665 is a wasteful number, since it uses less digits than its factorization.

166060665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 769 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 166060665 is about 12886.4527702545. The cubic root of 166060665 is about 549.6534069780.

The spelling of 166060665 in words is "one hundred sixty-six million, sixty thousand, six hundred sixty-five".