669528767 has 2 divisors, whose sum is σ = 669528768. Its totient is φ = 669528766.

The previous prime is 669528763. The next prime is 669528803. The reversal of 669528767 is 767825966.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 669528767 - 2² = 669528763 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669528763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334764383 + 334764384.

It is an arithmetic number, because the mean of its divisors is an integer number (334764384).

Almost surely, 2^669528767 is an apocalyptic number.

669528767 is a deficient number, since it is larger than the sum of its proper divisors (1).

669528767 is an equidigital number, since it uses as much as digits as its factorization.

669528767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 56.

The square root of 669528767 is about 25875.2539504446. The cubic root of 669528767 is about 874.8288174513.

The spelling of 669528767 in words is "six hundred sixty-nine million, five hundred twenty-eight thousand, seven hundred sixty-seven".