2688410649 has 8 divisors (see below), whose sum is σ = 3590124832. Its totient is φ = 1789485120.

The previous prime is 2688410633. The next prime is 2688410657. The reversal of 2688410649 is 9460148862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2688410649 - 2⁴ = 2688410633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2688410598 and 2688410607.

It is not an unprimeable number, because it can be changed into a prime (2688610649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694912 + ... + 698769.

It is an arithmetic number, because the mean of its divisors is an integer number (448765604).

Almost surely, 2^2688410649 is an apocalyptic number.

It is an amenable number.

2688410649 is a deficient number, since it is larger than the sum of its proper divisors (901714183).

2688410649 is a wasteful number, since it uses less digits than its factorization.

2688410649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394327.

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 2688410649 is about 51849.8857182926. The cubic root of 2688410649 is about 1390.4814592533.

The spelling of 2688410649 in words is "two billion, six hundred eighty-eight million, four hundred ten thousand, six hundred forty-nine".