166340390 has 16 divisors (see below), whose sum is σ = 299585520. Its totient is φ = 66497760.

The previous prime is 166340329. The next prime is 166340429. The reversal of 166340390 is 93043661.

It is a happy number.

166340390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19025 + ... + 26355.

It is an arithmetic number, because the mean of its divisors is an integer number (18724095).

Almost surely, 2^166340390 is an apocalyptic number.

166340390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166340390 is a deficient number, since it is larger than the sum of its proper divisors (133245130).

166340390 is a wasteful number, since it uses less digits than its factorization.

166340390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9607.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 166340390 is about 12897.3016557728. The cubic root of 166340390 is about 549.9618596141.

The spelling of 166340390 in words is "one hundred sixty-six million, three hundred forty thousand, three hundred ninety".