1171664688 has 40 divisors (see below), whose sum is σ = 3097196608. Its totient is φ = 381471552.

The previous prime is 1171664687. The next prime is 1171664707. The reversal of 1171664688 is 8864661711.

It is a super-2 number, since 2×1171664688² = 2745596282212274688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1171664687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281770 + ... + 285897.

Almost surely, 2^1171664688 is an apocalyptic number.

It is an amenable number.

1171664688 is an abundant number, since it is smaller than the sum of its proper divisors (1925531920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1171664688 is a wasteful number, since it uses less digits than its factorization.

1171664688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567721 (or 567715 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The square root of 1171664688 is about 34229.5879028656. The cubic root of 1171664688 is about 1054.2277579834.

The spelling of 1171664688 in words is "one billion, one hundred seventy-one million, six hundred sixty-four thousand, six hundred eighty-eight".