6405712036 has 6 divisors (see below), whose sum is σ = 11209996070. Its totient is φ = 3202856016.

The previous prime is 6405712007. The next prime is 6405712051. The reversal of 6405712036 is 6302175046.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6391043136 + 14668900 = 79944^2 + 3830^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6405711992 and 6405712010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800714001 + ... + 800714008.

Almost surely, 2^6405712036 is an apocalyptic number.

It is an amenable number.

6405712036 is a deficient number, since it is larger than the sum of its proper divisors (4804284034).

6405712036 is a wasteful number, since it uses less digits than its factorization.

6405712036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601428013 (or 1601428011 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 6405712036 is about 80035.6922628898. The cubic root of 6405712036 is about 1857.1877217530.

The spelling of 6405712036 in words is "six billion, four hundred five million, seven hundred twelve thousand, thirty-six".