1405666036 has 12 divisors (see below), whose sum is σ = 2512254528. Its totient is φ = 687879032.

The previous prime is 1405666019. The next prime is 1405666043. The reversal of 1405666036 is 6306665041.

It is a junction number, because it is equal to n+sod(n) for n = 1405665986 and 1405666004.

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, 3738286 + ... + 3738661.

It is an arithmetic number, because the mean of its divisors is an integer number (209354544).

Almost surely, 2^1405666036 is an apocalyptic number.

It is an amenable number.

1405666036 is a deficient number, since it is larger than the sum of its proper divisors (1106588492).

1405666036 is a wasteful number, since it uses less digits than its factorization.

1405666036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7476998 (or 7476996 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 1405666036 is about 37492.2130048361. The cubic root of 1405666036 is about 1120.1960849285.

The spelling of 1405666036 in words is "one billion, four hundred five million, six hundred sixty-six thousand, thirty-six".