669608059 has 2 divisors, whose sum is σ = 669608060. Its totient is φ = 669608058.

The previous prime is 669608003. The next prime is 669608063. The reversal of 669608059 is 950806966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669608059 - 2¹⁹ = 669083771 is a prime.

It is not a weakly prime, because it can be changed into another prime (669600059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334804029 + 334804030.

It is an arithmetic number, because the mean of its divisors is an integer number (334804030).

Almost surely, 2^669608059 is an apocalyptic number.

669608059 is a deficient number, since it is larger than the sum of its proper divisors (1).

669608059 is an equidigital number, since it uses as much as digits as its factorization.

669608059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 669608059 is about 25876.7861026056. The cubic root of 669608059 is about 874.8633512865.

The spelling of 669608059 in words is "six hundred sixty-nine million, six hundred eight thousand, fifty-nine".