21096763 has 2 divisors, whose sum is σ = 21096764. Its totient is φ = 21096762.

The previous prime is 21096739. The next prime is 21096787. The reversal of 21096763 is 36769012.

It is a balanced prime because it is at equal distance from previous prime (21096739) and next prime (21096787).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21096763 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is equal to p_1335688 and since 21096763 and 1335688 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (21096793) 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 as a sum of consecutive naturals, namely, 10548381 + 10548382.

It is an arithmetic number, because the mean of its divisors is an integer number (10548382).

Almost surely, 2^21096763 is an apocalyptic number.

21096763 is a deficient number, since it is larger than the sum of its proper divisors (1).

21096763 is an equidigital number, since it uses as much as digits as its factorization.

21096763 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 21096763 is about 4593.1212698992. The cubic root of 21096763 is about 276.3155173117.

The spelling of 21096763 in words is "twenty-one million, ninety-six thousand, seven hundred sixty-three".