213627665 has 16 divisors (see below), whose sum is σ = 267211776. Its totient is φ = 163771200.

The previous prime is 213627649. The next prime is 213627709. The reversal of 213627665 is 566726312.

It is not a de Polignac number, because 213627665 - 2⁴ = 213627649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9275 + ... + 22655.

It is an arithmetic number, because the mean of its divisors is an integer number (16700736).

Almost surely, 2^213627665 is an apocalyptic number.

It is an amenable number.

213627665 is a deficient number, since it is larger than the sum of its proper divisors (53584111).

213627665 is a wasteful number, since it uses less digits than its factorization.

213627665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13520.

The product of its digits is 90720, while the sum is 38.

The square root of 213627665 is about 14616.0071496972. The cubic root of 213627665 is about 597.7953022877.

The spelling of 213627665 in words is "two hundred thirteen million, six hundred twenty-seven thousand, six hundred sixty-five".