2630605840 has 80 divisors (see below), whose sum is σ = 6626683008. Its totient is φ = 967292928.

The previous prime is 2630605829. The next prime is 2630605847. The reversal of 2630605840 is 485060362.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 2630605796 and 2630605805.

It is not an unprimeable number, because it can be changed into a prime (2630605847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35989 + ... + 80971.

Almost surely, 2^2630605840 is an apocalyptic number.

2630605840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2630605840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3313341504).

2630605840 is an abundant number, since it is smaller than the sum of its proper divisors (3996077168).

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

2630605840 is a wasteful number, since it uses less digits than its factorization.

2630605840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45056 (or 45050 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 2630605840 is about 51289.4320498872. The cubic root of 2630605840 is about 1380.4433638078.

The spelling of 2630605840 in words is "two billion, six hundred thirty million, six hundred five thousand, eight hundred forty".