6418990 has 16 divisors (see below), whose sum is σ = 11583648. Its totient is φ = 2561056.

The previous prime is 6418981. The next prime is 6418991. The reversal of 6418990 is 998146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6418991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6039 + ... + 7021.

It is an arithmetic number, because the mean of its divisors is an integer number (723978).

Almost surely, 2^6418990 is an apocalyptic number.

6418990 is a deficient number, since it is larger than the sum of its proper divisors (5164658).

6418990 is a wasteful number, since it uses less digits than its factorization.

6418990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 6418990 is about 2533.5725764225. The cubic root of 6418990 is about 185.8470048772.

The spelling of 6418990 in words is "six million, four hundred eighteen thousand, nine hundred ninety".