2667667663 has 4 divisors (see below), whose sum is σ = 2669391400. Its totient is φ = 2665943928.

The previous prime is 2667667661. The next prime is 2667667687. The reversal of 2667667663 is 3667667662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2667667663 - 2¹ = 2667667661 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 (2667667661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 859545 + ... + 862642.

It is an arithmetic number, because the mean of its divisors is an integer number (667347850).

Almost surely, 2^2667667663 is an apocalyptic number.

2667667663 is a deficient number, since it is larger than the sum of its proper divisors (1723737).

2667667663 is a wasteful number, since it uses less digits than its factorization.

2667667663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723736.

The product of its digits is 13716864, while the sum is 55.

The square root of 2667667663 is about 51649.4691453843. The cubic root of 2667667663 is about 1386.8960400184.

Subtracting 2667667663 from its reverse (3667667662), we obtain a palindrome (999999999).

The spelling of 2667667663 in words is "two billion, six hundred sixty-seven million, six hundred sixty-seven thousand, six hundred sixty-three".