664001452 has 6 divisors (see below), whose sum is σ = 1162002548. Its totient is φ = 332000724.

The previous prime is 664001449. The next prime is 664001461. The reversal of 664001452 is 254100466.

It is a self number, because there is not a number n which added to its sum of digits gives 664001452.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83000178 + ... + 83000185.

Almost surely, 2^664001452 is an apocalyptic number.

It is an amenable number.

664001452 is a deficient number, since it is larger than the sum of its proper divisors (498001096).

664001452 is a wasteful number, since it uses less digits than its factorization.

664001452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166000367 (or 166000365 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 664001452 is about 25768.2256276989. The cubic root of 664001452 is about 872.4147702068.

The spelling of 664001452 in words is "six hundred sixty-four million, one thousand, four hundred fifty-two".