6662990 has 16 divisors (see below), whose sum is σ = 12024720. Its totient is φ = 2658240.

The previous prime is 6662989. The next prime is 6662993. The reversal of 6662990 is 992666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6662993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5105 + ... + 6275.

It is an arithmetic number, because the mean of its divisors is an integer number (751545).

Almost surely, 2^6662990 is an apocalyptic number.

6662990 is a deficient number, since it is larger than the sum of its proper divisors (5361730).

6662990 is a wasteful number, since it uses less digits than its factorization.

6662990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 6662990 is about 2581.2768158413. The cubic root of 6662990 is about 188.1726006559.

The spelling of 6662990 in words is "six million, six hundred sixty-two thousand, nine hundred ninety".