664610246 has 12 divisors (see below), whose sum is σ = 1021828596. Its totient is φ = 324198480.

The previous prime is 664610237. The next prime is 664610251. The reversal of 664610246 is 642016466.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 95480 + ... + 102203.

It is an arithmetic number, because the mean of its divisors is an integer number (85152383).

Almost surely, 2^664610246 is an apocalyptic number.

664610246 is a deficient number, since it is larger than the sum of its proper divisors (357218350).

664610246 is a wasteful number, since it uses less digits than its factorization.

664610246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197767 (or 197726 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 664610246 is about 25780.0358029232. The cubic root of 664610246 is about 872.6813151258.

The spelling of 664610246 in words is "six hundred sixty-four million, six hundred ten thousand, two hundred forty-six".