2690064688 has 20 divisors (see below), whose sum is σ = 5486316760. Its totient is φ = 1274241024.

The previous prime is 2690064677. The next prime is 2690064691. The reversal of 2690064688 is 8864600962.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4424145 + ... + 4424752.

It is an arithmetic number, because the mean of its divisors is an integer number (274315838).

Almost surely, 2^2690064688 is an apocalyptic number.

It is an amenable number.

2690064688 is an abundant number, since it is smaller than the sum of its proper divisors (2796252072).

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

2690064688 is a wasteful number, since it uses less digits than its factorization.

2690064688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8848924 (or 8848918 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

The square root of 2690064688 is about 51865.8335322975. The cubic root of 2690064688 is about 1390.7665643894.

The spelling of 2690064688 in words is "two billion, six hundred ninety million, sixty-four thousand, six hundred eighty-eight".