2667429661 has 16 divisors (see below), whose sum is σ = 2918824384. Its totient is φ = 2422721664.

The previous prime is 2667429649. The next prime is 2667429679. The reversal of 2667429661 is 1669247662.

It is a cyclic number.

It is not a de Polignac number, because 2667429661 - 2³¹ = 519946013 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 (2667429461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1520761 + ... + 1522513.

It is an arithmetic number, because the mean of its divisors is an integer number (182426524).

Almost surely, 2^2667429661 is an apocalyptic number.

It is an amenable number.

2667429661 is a deficient number, since it is larger than the sum of its proper divisors (251394723).

2667429661 is a wasteful number, since it uses less digits than its factorization.

2667429661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580.

The product of its digits is 1306368, while the sum is 49.

The square root of 2667429661 is about 51647.1650819287. The cubic root of 2667429661 is about 1386.8547937701.

The spelling of 2667429661 in words is "two billion, six hundred sixty-seven million, four hundred twenty-nine thousand, six hundred sixty-one".