490511668 has 12 divisors (see below), whose sum is σ = 858936960. Its totient is φ = 245101112.

The previous prime is 490511617. The next prime is 490511669. The reversal of 490511668 is 866115094.

It is a self number, because there is not a number n which added to its sum of digits gives 490511668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490511669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31396 + ... + 44347.

It is an arithmetic number, because the mean of its divisors is an integer number (71578080).

Almost surely, 2^490511668 is an apocalyptic number.

It is an amenable number.

490511668 is a deficient number, since it is larger than the sum of its proper divisors (368425292).

490511668 is a wasteful number, since it uses less digits than its factorization.

490511668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77366 (or 77364 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 490511668 is about 22147.4980076757. The cubic root of 490511668 is about 788.6478327554.

The spelling of 490511668 in words is "four hundred ninety million, five hundred eleven thousand, six hundred sixty-eight".