1406686645 has 32 divisors (see below), whose sum is σ = 2080173312. Its totient is φ = 889270272.

The previous prime is 1406686637. The next prime is 1406686651. The reversal of 1406686645 is 5466866041.

It is a cyclic number.

It is not a de Polignac number, because 1406686645 - 2³ = 1406686637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1406686595 and 1406686604.

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 31 ways as a sum of consecutive naturals, for example, 509589 + ... + 512341.

It is an arithmetic number, because the mean of its divisors is an integer number (65005416).

Almost surely, 2^1406686645 is an apocalyptic number.

It is an amenable number.

1406686645 is a deficient number, since it is larger than the sum of its proper divisors (673486667).

1406686645 is a wasteful number, since it uses less digits than its factorization.

1406686645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901.

The product of its (nonzero) digits is 829440, while the sum is 46.

The square root of 1406686645 is about 37505.8214814714. The cubic root of 1406686645 is about 1120.4671321493.

The spelling of 1406686645 in words is "one billion, four hundred six million, six hundred eighty-six thousand, six hundred forty-five".