21068495 has 16 divisors (see below), whose sum is σ = 29568000. Its totient is φ = 14109984.

The previous prime is 21068477. The next prime is 21068513. The reversal of 21068495 is 59486012.

It is an interprime number because it is at equal distance from previous prime (21068477) and next prime (21068513).

It is not a de Polignac number, because 21068495 - 2¹⁴ = 21052111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

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, 5495 + ... + 8504.

It is an arithmetic number, because the mean of its divisors is an integer number (1848000).

Almost surely, 2^21068495 is an apocalyptic number.

21068495 is a deficient number, since it is larger than the sum of its proper divisors (8499505).

21068495 is a wasteful number, since it uses less digits than its factorization.

21068495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14054.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 21068495 is about 4590.0430281208. The cubic root of 21068495 is about 276.1920484759.

It can be divided in two parts, 2106 and 8495, that added together give a palindrome (10601).

The spelling of 21068495 in words is "twenty-one million, sixty-eight thousand, four hundred ninety-five".