1161706556 has 12 divisors (see below), whose sum is σ = 2036373360. Its totient is φ = 579885600.

The previous prime is 1161706529. The next prime is 1161706603. The reversal of 1161706556 is 6556071611.

It is a super-2 number, since 2×1161706556² = 2699124244506762272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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, 239216 + ... + 244023.

It is an arithmetic number, because the mean of its divisors is an integer number (169697780).

Almost surely, 2^1161706556 is an apocalyptic number.

It is an amenable number.

1161706556 is a deficient number, since it is larger than the sum of its proper divisors (874666804).

1161706556 is a wasteful number, since it uses less digits than its factorization.

1161706556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483844 (or 483842 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 1161706556 is about 34083.8166290103. The cubic root of 1161706556 is about 1051.2325830553.

The spelling of 1161706556 in words is "one billion, one hundred sixty-one million, seven hundred six thousand, five hundred fifty-six".