668032450 has 12 divisors (see below), whose sum is σ = 1242540450. Its totient is φ = 267212960.

The previous prime is 668032441. The next prime is 668032489. The reversal of 668032450 is 54230866.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 259628769 + 408403681 = 16113^2 + 20209^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6680275 + ... + 6680374.

Almost surely, 2^668032450 is an apocalyptic number.

668032450 is a deficient number, since it is larger than the sum of its proper divisors (574508000).

668032450 is a wasteful number, since it uses less digits than its factorization.

668032450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13360661 (or 13360656 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 668032450 is about 25846.3237231139. The cubic root of 668032450 is about 874.1766186325.

The spelling of 668032450 in words is "six hundred sixty-eight million, thirty-two thousand, four hundred fifty".