2690842768 has 10 divisors (see below), whose sum is σ = 5213507894. Its totient is φ = 1345421376.

The previous prime is 2690842747. The next prime is 2690842769. The reversal of 2690842768 is 8672480962.

It can be written as a sum of positive squares in only one way, i.e., 2690704384 + 138384 = 51872^2 + 372^2 .

It is not an unprimeable number, because it can be changed into a prime (2690842769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84088821 + ... + 84088852.

Almost surely, 2^2690842768 is an apocalyptic number.

It is an amenable number.

2690842768 is a deficient number, since it is larger than the sum of its proper divisors (2522665126).

2690842768 is a wasteful number, since it uses less digits than its factorization.

2690842768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168177681 (or 168177675 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 52.

The square root of 2690842768 is about 51873.3338816776. Note that the first 3 decimals coincide. The cubic root of 2690842768 is about 1390.9006408842.

The spelling of 2690842768 in words is "two billion, six hundred ninety million, eight hundred forty-two thousand, seven hundred sixty-eight".