166235801 has 8 divisors (see below), whose sum is σ = 172286400. Its totient is φ = 160206480.

The previous prime is 166235767. The next prime is 166235821. The reversal of 166235801 is 108532661.

It is a happy number.

166235801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166235801 - 2⁶ = 166235737 is a prime.

It is a super-2 number, since 2×166235801² = 55268683068223202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166235821) 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, 11540 + ... + 21578.

It is an arithmetic number, because the mean of its divisors is an integer number (21535800).

Almost surely, 2^166235801 is an apocalyptic number.

It is an amenable number.

166235801 is a deficient number, since it is larger than the sum of its proper divisors (6050599).

166235801 is a wasteful number, since it uses less digits than its factorization.

166235801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10639.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 166235801 is about 12893.2463328675. The cubic root of 166235801 is about 549.8465698747.

The spelling of 166235801 in words is "one hundred sixty-six million, two hundred thirty-five thousand, eight hundred one".