2690842747 has 2 divisors, whose sum is σ = 2690842748. Its totient is φ = 2690842746.

The previous prime is 2690842663. The next prime is 2690842769. The reversal of 2690842747 is 7472480962.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2690842747 - 2³¹ = 543359099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2690842747.

It is not a weakly prime, because it can be changed into another prime (2690842247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345421373 + 1345421374.

It is an arithmetic number, because the mean of its divisors is an integer number (1345421374).

Almost surely, 2^2690842747 is an apocalyptic number.

2690842747 is a deficient number, since it is larger than the sum of its proper divisors (1).

2690842747 is an equidigital number, since it uses as much as digits as its factorization.

2690842747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The square root of 2690842747 is about 51873.3336792614. Note that the first 3 decimals coincide. The cubic root of 2690842747 is about 1390.9006372659.

The spelling of 2690842747 in words is "two billion, six hundred ninety million, eight hundred forty-two thousand, seven hundred forty-seven".