213663896 has 8 divisors (see below), whose sum is σ = 400619820. Its totient is φ = 106831944.

The previous prime is 213663893. The next prime is 213663917. The reversal of 213663896 is 698366312.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213663893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13353986 + ... + 13354001.

Almost surely, 2^213663896 is an apocalyptic number.

It is an amenable number.

213663896 is a deficient number, since it is larger than the sum of its proper divisors (186955924).

213663896 is a wasteful number, since it uses less digits than its factorization.

213663896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26707993 (or 26707989 counting only the distinct ones).

The product of its digits is 279936, while the sum is 44.

The square root of 213663896 is about 14617.2465259364. The cubic root of 213663896 is about 597.8290955034.

The spelling of 213663896 in words is "two hundred thirteen million, six hundred sixty-three thousand, eight hundred ninety-six".