213772663 has 12 divisors (see below), whose sum is σ = 233042448. Its totient is φ = 195998400.

The previous prime is 213772639. The next prime is 213772673. The reversal of 213772663 is 366277312.

It is not a de Polignac number, because 213772663 - 2⁵ = 213772631 is a prime.

It is a super-2 number, since 2×213772663² = 91397502892223138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213772633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21331 + ... + 29707.

It is an arithmetic number, because the mean of its divisors is an integer number (19420204).

Almost surely, 2^213772663 is an apocalyptic number.

213772663 is a deficient number, since it is larger than the sum of its proper divisors (19269785).

213772663 is a wasteful number, since it uses less digits than its factorization.

213772663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8554 (or 8541 counting only the distinct ones).

The product of its digits is 63504, while the sum is 37.

The square root of 213772663 is about 14620.9665549169. The cubic root of 213772663 is about 597.9305212285.

The spelling of 213772663 in words is "two hundred thirteen million, seven hundred seventy-two thousand, six hundred sixty-three".