166027090 has 16 divisors (see below), whose sum is σ = 298995480. Its totient is φ = 66378240.

The previous prime is 166027063. The next prime is 166027091. The reversal of 166027090 is 90720661.

It can be written as a sum of positive squares in 4 ways, for example, as 96020401 + 70006689 = 9799^2 + 8367^2 .

It is a super-2 number, since 2×166027090² = 55129989227736200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166027091) 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, 38146 + ... + 42274.

Almost surely, 2^166027090 is an apocalyptic number.

166027090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166027090 is a deficient number, since it is larger than the sum of its proper divisors (132968390).

166027090 is a wasteful number, since it uses less digits than its factorization.

166027090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8157.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 166027090 is about 12885.1499797247. The cubic root of 166027090 is about 549.6163605628.

The spelling of 166027090 in words is "one hundred sixty-six million, twenty-seven thousand, ninety".