668850832 has 20 divisors (see below), whose sum is σ = 1395583420. Its totient is φ = 308700288.

The previous prime is 668850811. The next prime is 668850841. The reversal of 668850832 is 238058866.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 88811776 + 580039056 = 9424^2 + 24084^2 .

It is a super-2 number, since 2×668850832² = 894722870934184448, which contains 22 as substring.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1607607 + ... + 1608022.

It is an arithmetic number, because the mean of its divisors is an integer number (69779171).

Almost surely, 2^668850832 is an apocalyptic number.

It is an amenable number.

668850832 is an abundant number, since it is smaller than the sum of its proper divisors (726732588).

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

668850832 is a wasteful number, since it uses less digits than its factorization.

668850832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215650 (or 3215644 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 668850832 is about 25862.1505679632. The cubic root of 668850832 is about 874.5334468410.

The spelling of 668850832 in words is "six hundred sixty-eight million, eight hundred fifty thousand, eight hundred thirty-two".