2666747390 has 16 divisors (see below), whose sum is σ = 4813905600. Its totient is φ = 1063641120.

The previous prime is 2666747323. The next prime is 2666747437. The reversal of 2666747390 is 937476662.

It is a super-2 number, since 2×2666747390² = 14223083284143624200, 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 7 ways as a sum of consecutive naturals, for example, 378566 + ... + 385545.

It is an arithmetic number, because the mean of its divisors is an integer number (300869100).

Almost surely, 2^2666747390 is an apocalyptic number.

2666747390 is a deficient number, since it is larger than the sum of its proper divisors (2147158210).

2666747390 is a wasteful number, since it uses less digits than its factorization.

2666747390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764467.

The product of its (nonzero) digits is 2286144, while the sum is 50.

The square root of 2666747390 is about 51640.5595438314. The cubic root of 2666747390 is about 1386.7365411684.

The spelling of 2666747390 in words is "two billion, six hundred sixty-six million, seven hundred forty-seven thousand, three hundred ninety".