666708490 has 32 divisors (see below), whose sum is σ = 1373157504. Its totient is φ = 228312000.

The previous prime is 666708481. The next prime is 666708517. The reversal of 666708490 is 94807666.

666708490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 666708490.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58240 + ... + 68740.

It is an arithmetic number, because the mean of its divisors is an integer number (42911172).

Almost surely, 2^666708490 is an apocalyptic number.

666708490 is an abundant number, since it is smaller than the sum of its proper divisors (706449014).

666708490 is a wasteful number, since it uses less digits than its factorization.

666708490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11422.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 666708490 is about 25820.6988673816. The cubic root of 666708490 is about 873.5987323778.

The spelling of 666708490 in words is "six hundred sixty-six million, seven hundred eight thousand, four hundred ninety".