2666357862 has 64 divisors (see below), whose sum is σ = 6352919040. Its totient is φ = 730135296.

The previous prime is 2666357839. The next prime is 2666357873. The reversal of 2666357862 is 2687536662.

It is a super-2 number, since 2×2666357862² = 14218928496498422088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91314 + ... + 116922.

It is an arithmetic number, because the mean of its divisors is an integer number (99264360).

Almost surely, 2^2666357862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666357862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3176459520).

2666357862 is an abundant number, since it is smaller than the sum of its proper divisors (3686561178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2666357862 is a wasteful number, since it uses less digits than its factorization.

2666357862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25725.

The product of its digits is 4354560, while the sum is 51.

The square root of 2666357862 is about 51636.7878745377. The cubic root of 2666357862 is about 1386.6690183356.

The spelling of 2666357862 in words is "two billion, six hundred sixty-six million, three hundred fifty-seven thousand, eight hundred sixty-two".