2690080821 has 8 divisors (see below), whose sum is σ = 3985304960. Its totient is φ = 1793387196.

The previous prime is 2690080787. The next prime is 2690080823. The reversal of 2690080821 is 1280800962.

It is not a de Polignac number, because 2690080821 - 2⁷ = 2690080693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2690080823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49816285 + ... + 49816338.

It is an arithmetic number, because the mean of its divisors is an integer number (498163120).

Almost surely, 2^2690080821 is an apocalyptic number.

It is an amenable number.

2690080821 is a deficient number, since it is larger than the sum of its proper divisors (1295224139).

2690080821 is an equidigital number, since it uses as much as digits as its factorization.

2690080821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99632632 (or 99632626 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 2690080821 is about 51865.9890583415. The cubic root of 2690080821 is about 1390.7693446437.

The spelling of 2690080821 in words is "two billion, six hundred ninety million, eighty thousand, eight hundred twenty-one".