5601660166 has 16 divisors (see below), whose sum is σ = 8782447968. Its totient is φ = 2674584000.

The previous prime is 5601660139. The next prime is 5601660167. The reversal of 5601660166 is 6610661065.

It is a super-2 number, since 2×5601660166² = 62757193230702295112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5601660167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73665 + ... + 128956.

It is an arithmetic number, because the mean of its divisors is an integer number (548902998).

Almost surely, 2^5601660166 is an apocalyptic number.

5601660166 is a deficient number, since it is larger than the sum of its proper divisors (3180787802).

5601660166 is a wasteful number, since it uses less digits than its factorization.

5601660166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203247.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 5601660166 is about 74844.2393641622. The cubic root of 5601660166 is about 1775.9834704367.

The spelling of 5601660166 in words is "five billion, six hundred one million, six hundred sixty thousand, one hundred sixty-six".