668472527 has 2 divisors, whose sum is σ = 668472528. Its totient is φ = 668472526.

The previous prime is 668472523. The next prime is 668472583. The reversal of 668472527 is 725274866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 668472527 - 2² = 668472523 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (668472523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334236263 + 334236264.

It is an arithmetic number, because the mean of its divisors is an integer number (334236264).

Almost surely, 2^668472527 is an apocalyptic number.

668472527 is a deficient number, since it is larger than the sum of its proper divisors (1).

668472527 is an equidigital number, since it uses as much as digits as its factorization.

668472527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 47.

The square root of 668472527 is about 25854.8356598916. The cubic root of 668472527 is about 874.3685357456.

The spelling of 668472527 in words is "six hundred sixty-eight million, four hundred seventy-two thousand, five hundred twenty-seven".