6423690 has 96 divisors (see below), whose sum is σ = 19184256. Its totient is φ = 1347840.

The previous prime is 6423673. The next prime is 6423707. The reversal of 6423690 is 963246.

It is an interprime number because it is at equal distance from previous prime (6423673) and next prime (6423707).

It is a super-2 number, since 2×6423690² = 82527586432200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35400 + ... + 35580.

It is an arithmetic number, because the mean of its divisors is an integer number (199836).

Almost surely, 2^6423690 is an apocalyptic number.

It is a pronic number, being equal to 2534×2535.

It is a practical number, because each smaller number is the sum of distinct divisors of 6423690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9592128).

6423690 is an abundant number, since it is smaller than the sum of its proper divisors (12760566).

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

6423690 is a wasteful number, since it uses less digits than its factorization.

6423690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 6423690 is about 2534.4999506806. The cubic root of 6423690 is about 185.8923530198.

The spelling of 6423690 in words is "six million, four hundred twenty-three thousand, six hundred ninety".