2687660433 has 56 divisors (see below), whose sum is σ = 4177078752. Its totient is φ = 1727345088.

The previous prime is 2687660429. The next prime is 2687660449. The reversal of 2687660433 is 3340667862.

2687660433 is a `hidden beast` number, since 2 + 6 + 8 + 7 + 6 + 604 + 33 = 666.

It is not a de Polignac number, because 2687660433 - 2² = 2687660429 is a prime.

It is a super-2 number, since 2×2687660433² = 14447037206227494978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2687660933) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2601285 + ... + 2602317.

It is an arithmetic number, because the mean of its divisors is an integer number (74590692).

Almost surely, 2^2687660433 is an apocalyptic number.

It is an amenable number.

2687660433 is a deficient number, since it is larger than the sum of its proper divisors (1489418319).

2687660433 is an equidigital number, since it uses as much as digits as its factorization.

2687660433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177 (or 1162 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The square root of 2687660433 is about 51842.6507134811. The cubic root of 2687660433 is about 1390.3521066824.

The spelling of 2687660433 in words is "two billion, six hundred eighty-seven million, six hundred sixty thousand, four hundred thirty-three".