2640246366 has 8 divisors (see below), whose sum is σ = 5280492744. Its totient is φ = 880082120.

The previous prime is 2640246331. The next prime is 2640246431. The reversal of 2640246366 is 6636420462.

It is a happy number.

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

2640246366 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220020525 + ... + 220020536.

It is an arithmetic number, because the mean of its divisors is an integer number (660061593).

Almost surely, 2^2640246366 is an apocalyptic number.

2640246366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2640246366 is a wasteful number, since it uses less digits than its factorization.

2640246366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440041066.

The product of its (nonzero) digits is 248832, while the sum is 39.

The square root of 2640246366 is about 51383.3277046164. The cubic root of 2640246366 is about 1382.1276369207.

The spelling of 2640246366 in words is "two billion, six hundred forty million, two hundred forty-six thousand, three hundred sixty-six".