21300662 has 4 divisors (see below), whose sum is σ = 31950996. Its totient is φ = 10650330.

The previous prime is 21300659. The next prime is 21300673. The reversal of 21300662 is 26600312.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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, 5325164 + ... + 5325167.

It is an arithmetic number, because the mean of its divisors is an integer number (7987749).

Almost surely, 2^21300662 is an apocalyptic number.

21300662 is a deficient number, since it is larger than the sum of its proper divisors (10650334).

21300662 is a wasteful number, since it uses less digits than its factorization.

21300662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10650333.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 21300662 is about 4615.2640227835. The cubic root of 21300662 is about 277.2028559196.

Adding to 21300662 its reverse (26600312), we get a palindrome (47900974).

The spelling of 21300662 in words is "twenty-one million, three hundred thousand, six hundred sixty-two".