213662601 has 6 divisors (see below), whose sum is σ = 308623770. Its totient is φ = 142441728.

The previous prime is 213662593. The next prime is 213662623. The reversal of 213662601 is 106266312.

213662601 is a `hidden beast` number, since 2 + 1 + 36 + 626 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 199487376 + 14175225 = 14124^2 + 3765^2 .

It is not a de Polignac number, because 213662601 - 2³ = 213662593 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213662671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11870136 + ... + 11870153.

It is an arithmetic number, because the mean of its divisors is an integer number (51437295).

Almost surely, 2^213662601 is an apocalyptic number.

It is an amenable number.

213662601 is a deficient number, since it is larger than the sum of its proper divisors (94961169).

213662601 is a wasteful number, since it uses less digits than its factorization.

213662601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23740295 (or 23740292 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 213662601 is about 14617.2022288809. The cubic root of 213662601 is about 597.8278877027.

The spelling of 213662601 in words is "two hundred thirteen million, six hundred sixty-two thousand, six hundred one".