699706663 has 2 divisors, whose sum is σ = 699706664. Its totient is φ = 699706662.

The previous prime is 699706619. The next prime is 699706681. The reversal of 699706663 is 366607996.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 699706663 - 2⁹ = 699706151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 699706663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699700663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349853331 + 349853332.

It is an arithmetic number, because the mean of its divisors is an integer number (349853332).

Almost surely, 2^699706663 is an apocalyptic number.

699706663 is a deficient number, since it is larger than the sum of its proper divisors (1).

699706663 is an equidigital number, since it uses as much as digits as its factorization.

699706663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2204496, while the sum is 52.

The square root of 699706663 is about 26451.9689815333. The cubic root of 699706663 is about 887.7799581778.

The spelling of 699706663 in words is "six hundred ninety-nine million, seven hundred six thousand, six hundred sixty-three".