21076063 has 16 divisors (see below), whose sum is σ = 22629376. Its totient is φ = 19595520.

The previous prime is 21076061. The next prime is 21076087. The reversal of 21076063 is 36067012.

It is a cyclic number.

It is not a de Polignac number, because 21076063 - 2¹ = 21076061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21076061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129220 + ... + 129382.

It is an arithmetic number, because the mean of its divisors is an integer number (1414336).

Almost surely, 2^21076063 is an apocalyptic number.

21076063 is a deficient number, since it is larger than the sum of its proper divisors (1553313).

21076063 is a wasteful number, since it uses less digits than its factorization.

21076063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 21076063 is about 4590.8673472450. The cubic root of 21076063 is about 276.2251147707.

The spelling of 21076063 in words is "twenty-one million, seventy-six thousand, sixty-three".