699609667 has 2 divisors, whose sum is σ = 699609668. Its totient is φ = 699609666.

The previous prime is 699609661. The next prime is 699609679. The reversal of 699609667 is 766906996.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 699609667 - 2²³ = 691221059 is a prime.

It is not a weakly prime, because it can be changed into another prime (699609661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349804833 + 349804834.

It is an arithmetic number, because the mean of its divisors is an integer number (349804834).

Almost surely, 2^699609667 is an apocalyptic number.

699609667 is a deficient number, since it is larger than the sum of its proper divisors (1).

699609667 is an equidigital number, since it uses as much as digits as its factorization.

699609667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6613488, while the sum is 58.

The square root of 699609667 is about 26450.1354816946. The cubic root of 699609667 is about 887.7389338035.

The spelling of 699609667 in words is "six hundred ninety-nine million, six hundred nine thousand, six hundred sixty-seven".