2643647036 has 48 divisors (see below), whose sum is σ = 4836252960. Its totient is φ = 1263360000.

The previous prime is 2643646987. The next prime is 2643647051. The reversal of 2643647036 is 6307463462.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 2643646984 and 2643647002.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4011275 + ... + 4011933.

It is an arithmetic number, because the mean of its divisors is an integer number (100755270).

Almost surely, 2^2643647036 is an apocalyptic number.

It is an amenable number.

2643647036 is a deficient number, since it is larger than the sum of its proper divisors (2192605924).

2643647036 is a wasteful number, since it uses less digits than its factorization.

2643647036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166 (or 1164 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 41.

The square root of 2643647036 is about 51416.4082370599. The cubic root of 2643647036 is about 1382.7207815024.

The spelling of 2643647036 in words is "two billion, six hundred forty-three million, six hundred forty-seven thousand, thirty-six".