6422490 has 56 divisors (see below), whose sum is σ = 17352468. Its totient is φ = 1710720.

The previous prime is 6422477. The next prime is 6422501. The reversal of 6422490 is 942246.

It can be written as a sum of positive squares in 2 ways, for example, as 6036849 + 385641 = 2457^2 + 621^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 6850 + ... + 7730.

Almost surely, 2^6422490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6422490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8676234).

6422490 is an abundant number, since it is smaller than the sum of its proper divisors (10929978).

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

6422490 is an equidigital number, since it uses as much as digits as its factorization.

6422490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906 (or 891 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 6422490 is about 2534.2632065356. The cubic root of 6422490 is about 185.8807768740.

The spelling of 6422490 in words is "six million, four hundred twenty-two thousand, four hundred ninety".