21332607 has 8 divisors (see below), whose sum is σ = 28803840. Its totient is φ = 14041560.

The previous prime is 21332579. The next prime is 21332621. The reversal of 21332607 is 70623312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21332607 - 2⁸ = 21332351 is a prime.

21332607 is a modest number, since divided by 2607 gives 2133 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44769 + ... + 45242.

It is an arithmetic number, because the mean of its divisors is an integer number (3600480).

Almost surely, 2^21332607 is an apocalyptic number.

21332607 is a deficient number, since it is larger than the sum of its proper divisors (7471233).

21332607 is an equidigital number, since it uses as much as digits as its factorization.

21332607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90093.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 21332607 is about 4618.7235249580. The cubic root of 21332607 is about 277.3413621332.

Adding to 21332607 its reverse (70623312), we get a palindrome (91955919).

The spelling of 21332607 in words is "twenty-one million, three hundred thirty-two thousand, six hundred seven".