166513560 has 64 divisors (see below), whose sum is σ = 521268480. Its totient is φ = 42472320.

The previous prime is 166513471. The next prime is 166513561. The reversal of 166513560 is 65315661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166513561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27406 + ... + 32925.

It is an arithmetic number, because the mean of its divisors is an integer number (8144820).

Almost surely, 2^166513560 is an apocalyptic number.

166513560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166513560 is an abundant number, since it is smaller than the sum of its proper divisors (354754920).

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

166513560 is a wasteful number, since it uses less digits than its factorization.

166513560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60368 (or 60364 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 166513560 is about 12904.0133291934. The cubic root of 166513560 is about 550.1526408295.

It can be divided in two parts, 1665 and 13560, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 166513560 in words is "one hundred sixty-six million, five hundred thirteen thousand, five hundred sixty".