2697661408 has 24 divisors (see below), whose sum is σ = 5719561848. Its totient is φ = 1245074304.

The previous prime is 2697661381. The next prime is 2697661411. The reversal of 2697661408 is 8041667962.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3241966 + ... + 3242797.

It is an arithmetic number, because the mean of its divisors is an integer number (238315077).

Almost surely, 2^2697661408 is an apocalyptic number.

It is an amenable number.

2697661408 is an abundant number, since it is smaller than the sum of its proper divisors (3021900440).

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

2697661408 is a wasteful number, since it uses less digits than its factorization.

2697661408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6484786 (or 6484778 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 2697661408 is about 51939.0162402023. The cubic root of 2697661408 is about 1392.0745049741.

The spelling of 2697661408 in words is "two billion, six hundred ninety-seven million, six hundred sixty-one thousand, four hundred eight".