2631006 has 72 divisors (see below), whose sum is σ = 7024680. Its totient is φ = 707616.

The previous prime is 2630989. The next prime is 2631007. The reversal of 2631006 is 6001362.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

2631006 is an undulating number in base 12.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2631006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631007) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16680 + ... + 16836.

It is an arithmetic number, because the mean of its divisors is an integer number (97565).

2^2631006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2631006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3512340).

2631006 is an abundant number, since it is smaller than the sum of its proper divisors (4393674).

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

2631006 is a wasteful number, since it uses less digits than its factorization.

2631006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2631006 is about 1622.0376074555. The cubic root of 2631006 is about 138.0513356583.

Adding to 2631006 its reverse (6001362), we get a palindrome (8632368).

The spelling of 2631006 in words is "two million, six hundred thirty-one thousand, six".