2640862264 has 64 divisors (see below), whose sum is σ = 5238950400. Its totient is φ = 1246156800.

The previous prime is 2640862249. The next prime is 2640862271. The reversal of 2640862264 is 4622680462.

It is a super-3 number, since 3×2640862264³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2702544 + ... + 2703520.

It is an arithmetic number, because the mean of its divisors is an integer number (81858600).

Almost surely, 2^2640862264 is an apocalyptic number.

It is an amenable number.

2640862264 is a deficient number, since it is larger than the sum of its proper divisors (2598088136).

2640862264 is a wasteful number, since it uses less digits than its factorization.

2640862264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264 (or 1260 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 40.

The square root of 2640862264 is about 51389.3205247939. The cubic root of 2640862264 is about 1382.2350995520.

The spelling of 2640862264 in words is "two billion, six hundred forty million, eight hundred sixty-two thousand, two hundred sixty-four".