2681865477 has 16 divisors (see below), whose sum is σ = 4004423680. Its totient is φ = 1773830016.

The previous prime is 2681865469. The next prime is 2681865503. The reversal of 2681865477 is 7745681862.

It is not a de Polignac number, because 2681865477 - 2³ = 2681865469 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 (2681865457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387628 + ... + 394485.

It is an arithmetic number, because the mean of its divisors is an integer number (250276480).

Almost surely, 2^2681865477 is an apocalyptic number.

2681865477 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2681865477 is a deficient number, since it is larger than the sum of its proper divisors (1322558203).

2681865477 is a wasteful number, since it uses less digits than its factorization.

2681865477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782249 (or 782243 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The square root of 2681865477 is about 51786.7307039168. The cubic root of 2681865477 is about 1389.3521258307.

The spelling of 2681865477 in words is "two billion, six hundred eighty-one million, eight hundred sixty-five thousand, four hundred seventy-seven".