2667213661 has 8 divisors (see below), whose sum is σ = 3048994944. Its totient is φ = 2285620080.

The previous prime is 2667213643. The next prime is 2667213671. The reversal of 2667213661 is 1663127662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2667213661 - 2⁷ = 2667213533 is a prime.

It is a super-2 number, since 2×2667213661² = 14228057426850045842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2667213611) 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, 15025 + ... + 74566.

It is an arithmetic number, because the mean of its divisors is an integer number (381124368).

Almost surely, 2^2667213661 is an apocalyptic number.

It is an amenable number.

2667213661 is a deficient number, since it is larger than the sum of its proper divisors (381781283).

2667213661 is an equidigital number, since it uses as much as digits as its factorization.

2667213661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93851.

The product of its digits is 108864, while the sum is 40.

The square root of 2667213661 is about 51645.0739277233. The cubic root of 2667213661 is about 1386.8173583910.

The spelling of 2667213661 in words is "two billion, six hundred sixty-seven million, two hundred thirteen thousand, six hundred sixty-one".