2666420246 has 16 divisors (see below), whose sum is σ = 4574252544. Its totient is φ = 1141939944.

The previous prime is 2666420221. The next prime is 2666420249. The reversal of 2666420246 is 6420246662.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666420249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47000 + ... + 86843.

It is an arithmetic number, because the mean of its divisors is an integer number (285890784).

Almost surely, 2^2666420246 is an apocalyptic number.

2666420246 is a deficient number, since it is larger than the sum of its proper divisors (1907832298).

2666420246 is a wasteful number, since it uses less digits than its factorization.

2666420246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135275.

The product of its (nonzero) digits is 165888, while the sum is 38.

The square root of 2666420246 is about 51637.3919364640. The cubic root of 2666420246 is about 1386.6798327486.

The spelling of 2666420246 in words is "two billion, six hundred sixty-six million, four hundred twenty thousand, two hundred forty-six".