166245801 has 32 divisors (see below), whose sum is σ = 239568000. Its totient is φ = 102228480.

The previous prime is 166245799. The next prime is 166245809. The reversal of 166245801 is 108542661.

It is not a de Polignac number, because 166245801 - 2¹ = 166245799 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166245809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 476175 + ... + 476523.

It is an arithmetic number, because the mean of its divisors is an integer number (7486500).

Almost surely, 2^166245801 is an apocalyptic number.

It is an amenable number.

166245801 is a deficient number, since it is larger than the sum of its proper divisors (73322199).

166245801 is a wasteful number, since it uses less digits than its factorization.

166245801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 166245801 is about 12893.6341269636. The cubic root of 166245801 is about 549.8575950879.

The spelling of 166245801 in words is "one hundred sixty-six million, two hundred forty-five thousand, eight hundred one".