166051066 has 16 divisors (see below), whose sum is σ = 263386368. Its totient is φ = 78386400.

The previous prime is 166051063. The next prime is 166051069. The reversal of 166051066 is 660150661.

It is an interprime number because it is at equal distance from previous prime (166051063) and next prime (166051069).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (166051063) 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, 30120 + ... + 35203.

It is an arithmetic number, because the mean of its divisors is an integer number (16461648).

Almost surely, 2^166051066 is an apocalyptic number.

166051066 is a deficient number, since it is larger than the sum of its proper divisors (97335302).

166051066 is a wasteful number, since it uses less digits than its factorization.

166051066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65397.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 166051066 is about 12886.0803194765. The cubic root of 166051066 is about 549.6428160197.

It can be divided in two parts, 16605 and 1066, that added together give a palindrome (17671).

The spelling of 166051066 in words is "one hundred sixty-six million, fifty-one thousand, sixty-six".