510661668 has 24 divisors (see below), whose sum is σ = 1299866400. Its totient is φ = 154745920.

The previous prime is 510661639. The next prime is 510661687. The reversal of 510661668 is 866166015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1934193 + ... + 1934456.

It is an arithmetic number, because the mean of its divisors is an integer number (54161100).

Almost surely, 2^510661668 is an apocalyptic number.

It is an amenable number.

510661668 is an abundant number, since it is smaller than the sum of its proper divisors (789204732).

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

510661668 is a wasteful number, since it uses less digits than its factorization.

510661668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3868667 (or 3868665 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 510661668 is about 22597.8244085576. The cubic root of 510661668 is about 799.3023438551.

The spelling of 510661668 in words is "five hundred ten million, six hundred sixty-one thousand, six hundred sixty-eight".