21027695 has 16 divisors (see below), whose sum is σ = 27451872. Its totient is φ = 15369600.

The previous prime is 21027689. The next prime is 21027701. The reversal of 21027695 is 59672012.

It is an interprime number because it is at equal distance from previous prime (21027689) and next prime (21027701).

It is not a de Polignac number, because 21027695 - 2⁴ = 21027679 is a prime.

It is a Duffinian number.

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, 4964 + ... + 8166.

It is an arithmetic number, because the mean of its divisors is an integer number (1715742).

Almost surely, 2^21027695 is an apocalyptic number.

21027695 is a deficient number, since it is larger than the sum of its proper divisors (6424177).

21027695 is a wasteful number, since it uses less digits than its factorization.

21027695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 21027695 is about 4585.5964715618. The cubic root of 21027695 is about 276.0136475433.

The spelling of 21027695 in words is "twenty-one million, twenty-seven thousand, six hundred ninety-five".