664414527 has 16 divisors (see below), whose sum is σ = 1018103040. Its totient is φ = 377542272.

The previous prime is 664414507. The next prime is 664414529. The reversal of 664414527 is 725414466.

It is not a de Polignac number, because 664414527 - 2⁶ = 664414463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664414529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84618 + ... + 92135.

It is an arithmetic number, because the mean of its divisors is an integer number (63631440).

Almost surely, 2^664414527 is an apocalyptic number.

664414527 is a deficient number, since it is larger than the sum of its proper divisors (353688513).

664414527 is a wasteful number, since it uses less digits than its factorization.

664414527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176942.

The product of its digits is 161280, while the sum is 39.

The square root of 664414527 is about 25776.2395822199. The cubic root of 664414527 is about 872.5956423152.

The spelling of 664414527 in words is "six hundred sixty-four million, four hundred fourteen thousand, five hundred twenty-seven".