166632290 has 32 divisors (see below), whose sum is σ = 328720896. Its totient is φ = 60312960.

The previous prime is 166632287. The next prime is 166632293. The reversal of 166632290 is 92236661.

It is an interprime number because it is at equal distance from previous prime (166632287) and next prime (166632293).

It is a self number, because there is not a number n which added to its sum of digits gives 166632290.

It is not an unprimeable number, because it can be changed into a prime (166632293) 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, 21134 + ... + 27926.

It is an arithmetic number, because the mean of its divisors is an integer number (10272528).

Almost surely, 2^166632290 is an apocalyptic number.

166632290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166632290 is a deficient number, since it is larger than the sum of its proper divisors (162088606).

166632290 is a wasteful number, since it uses less digits than its factorization.

166632290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7034.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 166632290 is about 12908.6130161222. The cubic root of 166632290 is about 550.2833691300.

The spelling of 166632290 in words is "one hundred sixty-six million, six hundred thirty-two thousand, two hundred ninety".