2668897540 has 24 divisors (see below), whose sum is σ = 5606076672. Its totient is φ = 1067293920.

The previous prime is 2668897537. The next prime is 2668897547. The reversal of 2668897540 is 457988662.

It is not an unprimeable number, because it can be changed into a prime (2668897547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79597 + ... + 108043.

It is an arithmetic number, because the mean of its divisors is an integer number (233586528).

Almost surely, 2^2668897540 is an apocalyptic number.

2668897540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2668897540 is an abundant number, since it is smaller than the sum of its proper divisors (2937179132).

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

2668897540 is a wasteful number, since it uses less digits than its factorization.

2668897540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33147 (or 33145 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 55.

The square root of 2668897540 is about 51661.3737719004. The cubic root of 2668897540 is about 1387.1091412108.

The spelling of 2668897540 in words is "two billion, six hundred sixty-eight million, eight hundred ninety-seven thousand, five hundred forty".