664264350 has 72 divisors (see below), whose sum is σ = 1796815800. Its totient is φ = 175930560.

The previous prime is 664264333. The next prime is 664264351. The reversal of 664264350 is 53462466.

664264350 is a `hidden beast` number, since 6 + 6 + 4 + 2 + 643 + 5 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664264351) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 62097 + ... + 72003.

It is an arithmetic number, because the mean of its divisors is an integer number (24955775).

Almost surely, 2^664264350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664264350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (898407900).

664264350 is an abundant number, since it is smaller than the sum of its proper divisors (1132551450).

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

664264350 is a wasteful number, since it uses less digits than its factorization.

664264350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10074 (or 10066 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 664264350 is about 25773.3263278142. The cubic root of 664264350 is about 872.5298933664.

The spelling of 664264350 in words is "six hundred sixty-four million, two hundred sixty-four thousand, three hundred fifty".