10020691 has 2 divisors, whose sum is σ = 10020692. Its totient is φ = 10020690.

The previous prime is 10020643. The next prime is 10020713. The reversal of 10020691 is 19602001.

It is a strong prime.

It is an emirp because it is prime and its reverse (19602001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10020691 is a prime.

It is not a weakly prime, because it can be changed into another prime (10020641) 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, 5010345 + 5010346.

It is an arithmetic number, because the mean of its divisors is an integer number (5010346).

Almost surely, 2^10020691 is an apocalyptic number.

10020691 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020691 is an equidigital number, since it uses as much as digits as its factorization.

10020691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 10020691 is about 3165.5475039873. The cubic root of 10020691 is about 215.5919579979.

Adding to 10020691 its reverse (19602001), we get a palindrome (29622692).

The spelling of 10020691 in words is "ten million, twenty thousand, six hundred ninety-one".