666563350 has 24 divisors (see below), whose sum is σ = 1240487568. Its totient is φ = 266479200.

The previous prime is 666563329. The next prime is 666563357. The reversal of 666563350 is 53365666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666563357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173652 + ... + 177448.

It is an arithmetic number, because the mean of its divisors is an integer number (51686982).

Almost surely, 2^666563350 is an apocalyptic number.

666563350 is a deficient number, since it is larger than the sum of its proper divisors (573924218).

666563350 is a wasteful number, since it uses less digits than its factorization.

666563350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7320 (or 7315 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 40.

The square root of 666563350 is about 25817.8881785478. Note that the first 3 decimals coincide. The cubic root of 666563350 is about 873.5353346940.

The spelling of 666563350 in words is "six hundred sixty-six million, five hundred sixty-three thousand, three hundred fifty".