1147689656 has 8 divisors (see below), whose sum is σ = 2151918120. Its totient is φ = 573844824.

The previous prime is 1147689649. The next prime is 1147689677. The reversal of 1147689656 is 6569867411.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1147689598 and 1147689607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71730596 + ... + 71730611.

It is an arithmetic number, because the mean of its divisors is an integer number (268989765).

Almost surely, 2^1147689656 is an apocalyptic number.

It is an amenable number.

1147689656 is a deficient number, since it is larger than the sum of its proper divisors (1004228464).

1147689656 is a wasteful number, since it uses less digits than its factorization.

1147689656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143461213 (or 143461209 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 53.

The square root of 1147689656 is about 33877.5686258622. The cubic root of 1147689656 is about 1046.9874818603.

The spelling of 1147689656 in words is "one billion, one hundred forty-seven million, six hundred eighty-nine thousand, six hundred fifty-six".