666692888963 has 2 divisors, whose sum is σ = 666692888964. Its totient is φ = 666692888962.

The previous prime is 666692888957. The next prime is 666692888969. The reversal of 666692888963 is 369888296666.

It is a balanced prime because it is at equal distance from previous prime (666692888957) and next prime (666692888969).

It is a cyclic number.

It is not a de Polignac number, because 666692888963 - 2²⁸ = 666424453507 is a prime.

It is not a weakly prime, because it can be changed into another prime (666692888969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333346444481 + 333346444482.

It is an arithmetic number, because the mean of its divisors is an integer number (333346444482).

Almost surely, 2^666692888963 is an apocalyptic number.

666692888963 is a deficient number, since it is larger than the sum of its proper divisors (1).

666692888963 is an equidigital number, since it uses as much as digits as its factorization.

666692888963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1934917632, while the sum is 77.

The spelling of 666692888963 in words is "six hundred sixty-six billion, six hundred ninety-two million, eight hundred eighty-eight thousand, nine hundred sixty-three".