664247196 has 24 divisors (see below), whose sum is σ = 1722122640. Its totient is φ = 221415696.

The previous prime is 664247183. The next prime is 664247197. The reversal of 664247196 is 691742466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664247197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3075111 + ... + 3075326.

It is an arithmetic number, because the mean of its divisors is an integer number (71755110).

Almost surely, 2^664247196 is an apocalyptic number.

It is an amenable number.

664247196 is an abundant number, since it is smaller than the sum of its proper divisors (1057875444).

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

664247196 is a wasteful number, since it uses less digits than its factorization.

664247196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6150450 (or 6150442 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 664247196 is about 25772.9935397501. The cubic root of 664247196 is about 872.5223825480.

The spelling of 664247196 in words is "six hundred sixty-four million, two hundred forty-seven thousand, one hundred ninety-six".