2667205997 has 8 divisors (see below), whose sum is σ = 2808224160. Its totient is φ = 2526251760.

The previous prime is 2667205987. The next prime is 2667206027. The reversal of 2667205997 is 7995027662.

It is a happy number.

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 2667205997 - 2¹⁰ = 2667204973 is a prime.

It is a super-2 number, since 2×2667205997² = 14227975660865528018, 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 (2667205967) 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, 86618 + ... + 113300.

It is an arithmetic number, because the mean of its divisors is an integer number (351028020).

Almost surely, 2^2667205997 is an apocalyptic number.

It is an amenable number.

2667205997 is a deficient number, since it is larger than the sum of its proper divisors (141018163).

2667205997 is a wasteful number, since it uses less digits than its factorization.

2667205997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31963.

The product of its (nonzero) digits is 2857680, while the sum is 53.

The square root of 2667205997 is about 51644.9997289186. Note that the first 3 decimals coincide. The cubic root of 2667205997 is about 1386.8160300912.

The spelling of 2667205997 in words is "two billion, six hundred sixty-seven million, two hundred five thousand, nine hundred ninety-seven".