1406136656 has 20 divisors (see below), whose sum is σ = 2790839604. Its totient is φ = 685920000.

The previous prime is 1406136643. The next prime is 1406136661. The reversal of 1406136656 is 6566316041.

It can be written as a sum of positive squares in 2 ways, for example, as 30913600 + 1375223056 = 5560^2 + 37084^2 .

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 3 ways as a sum of consecutive naturals, for example, 1071095 + ... + 1072406.

Almost surely, 2^1406136656 is an apocalyptic number.

1406136656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1406136656 is a deficient number, since it is larger than the sum of its proper divisors (1384702948).

1406136656 is a wasteful number, since it uses less digits than its factorization.

1406136656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143550 (or 2143544 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 1406136656 is about 37498.4887162136. The cubic root of 1406136656 is about 1120.3210856623.

The spelling of 1406136656 in words is "one billion, four hundred six million, one hundred thirty-six thousand, six hundred fifty-six".