1171790061 has 12 divisors (see below), whose sum is σ = 1691815968. Its totient is φ = 721101264.

The previous prime is 1171790057. The next prime is 1171790071. The reversal of 1171790061 is 1600971711.

It is a happy number.

It is not a de Polignac number, because 1171790061 - 2² = 1171790057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171790071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1155105 + ... + 1156118.

It is an arithmetic number, because the mean of its divisors is an integer number (140984664).

Almost surely, 2^1171790061 is an apocalyptic number.

It is an amenable number.

1171790061 is a deficient number, since it is larger than the sum of its proper divisors (520025907).

1171790061 is a wasteful number, since it uses less digits than its factorization.

1171790061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311252 (or 2311239 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 33.

The square root of 1171790061 is about 34231.4192080901. The cubic root of 1171790061 is about 1054.2653588954.

The spelling of 1171790061 in words is "one billion, one hundred seventy-one million, seven hundred ninety thousand, sixty-one".