1177090561 has 8 divisors (see below), whose sum is σ = 1180812960. Its totient is φ = 1173375072.

The previous prime is 1177090543. The next prime is 1177090609. The reversal of 1177090561 is 1650907711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1177090561 - 2⁵ = 1177090529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1177090561.

It is not an unprimeable number, because it can be changed into a prime (1177090511) 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, 806050 + ... + 807508.

It is an arithmetic number, because the mean of its divisors is an integer number (147601620).

Almost surely, 2^1177090561 is an apocalyptic number.

It is an amenable number.

1177090561 is a deficient number, since it is larger than the sum of its proper divisors (3722399).

1177090561 is a wasteful number, since it uses less digits than its factorization.

1177090561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3455.

The product of its (nonzero) digits is 13230, while the sum is 37.

The square root of 1177090561 is about 34308.7534165845. The cubic root of 1177090561 is about 1055.8525968043.

The spelling of 1177090561 in words is "one billion, one hundred seventy-seven million, ninety thousand, five hundred sixty-one".