2646798 has 64 divisors (see below), whose sum is σ = 7008768. Its totient is φ = 645120.

The previous prime is 2646797. The next prime is 2646803. The reversal of 2646798 is 8976462.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a d-powerful number, because it can be written as 2¹⁹ + 6 + 4⁷ + 6 + 7⁴ + 9⁴ + 8⁷ .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646793) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7686 + ... + 8022.

It is an arithmetic number, because the mean of its divisors is an integer number (109512).

2^2646798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2646798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3504384).

2646798 is an abundant number, since it is smaller than the sum of its proper divisors (4361970).

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

2646798 is a wasteful number, since it uses less digits than its factorization.

2646798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377.

The product of its digits is 145152, while the sum is 42.

The square root of 2646798 is about 1626.8982758612. The cubic root of 2646798 is about 138.3269918546.

It can be divided in two parts, 26467 and 98, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 2646798 in words is "two million, six hundred forty-six thousand, seven hundred ninety-eight".