664524245 has 16 divisors (see below), whose sum is σ = 994197888. Its totient is φ = 414248640.

The previous prime is 664524239. The next prime is 664524281. The reversal of 664524245 is 542425466.

It is not a de Polignac number, because 664524245 - 2¹² = 664520149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 664524199 and 664524208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 862634 + ... + 863403.

It is an arithmetic number, because the mean of its divisors is an integer number (62137368).

Almost surely, 2^664524245 is an apocalyptic number.

It is an amenable number.

664524245 is a deficient number, since it is larger than the sum of its proper divisors (329673643).

664524245 is a wasteful number, since it uses less digits than its factorization.

664524245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726060.

The product of its digits is 230400, while the sum is 38.

The square root of 664524245 is about 25778.3677722233. The cubic root of 664524245 is about 872.6436716580.

The spelling of 664524245 in words is "six hundred sixty-four million, five hundred twenty-four thousand, two hundred forty-five".