669552067 has 2 divisors, whose sum is σ = 669552068. Its totient is φ = 669552066.

The previous prime is 669552061. The next prime is 669552133. The reversal of 669552067 is 760255966.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 669552067 - 2²⁷ = 535334339 is a prime.

It is not a weakly prime, because it can be changed into another prime (669552061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334776033 + 334776034.

It is an arithmetic number, because the mean of its divisors is an integer number (334776034).

Almost surely, 2^669552067 is an apocalyptic number.

669552067 is a deficient number, since it is larger than the sum of its proper divisors (1).

669552067 is an equidigital number, since it uses as much as digits as its factorization.

669552067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 46.

The square root of 669552067 is about 25875.7041836546. The cubic root of 669552067 is about 874.8389655216.

The spelling of 669552067 in words is "six hundred sixty-nine million, five hundred fifty-two thousand, sixty-seven".