664509096 has 40 divisors (see below), whose sum is σ = 1861242570. Its totient is φ = 221502816.

The previous prime is 664509067. The next prime is 664509113. The reversal of 664509096 is 690905466.

It can be written as a sum of positive squares in only one way, i.e., 388484100 + 276024996 = 19710^2 + 16614^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 512091 + ... + 513386.

Almost surely, 2^664509096 is an apocalyptic number.

It is an amenable number.

664509096 is an abundant number, since it is smaller than the sum of its proper divisors (1196733474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664509096 is a wasteful number, since it uses less digits than its factorization.

664509096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025495 (or 1025482 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 664509096 is about 25778.0739389117. The cubic root of 664509096 is about 872.6370404580.

The spelling of 664509096 in words is "six hundred sixty-four million, five hundred nine thousand, ninety-six".