1170661639 has 8 divisors (see below), whose sum is σ = 1338277248. Its totient is φ = 1003140600.

The previous prime is 1170661607. The next prime is 1170661673. The reversal of 1170661639 is 9361660711.

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

It is not a de Polignac number, because 1170661639 - 2⁵ = 1170661607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1170661039) 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, 5244 + ... + 48670.

It is an arithmetic number, because the mean of its divisors is an integer number (167284656).

Almost surely, 2^1170661639 is an apocalyptic number.

1170661639 is a deficient number, since it is larger than the sum of its proper divisors (167615609).

1170661639 is an equidigital number, since it uses as much as digits as its factorization.

1170661639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47285.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 1170661639 is about 34214.9329825443. The cubic root of 1170661639 is about 1053.9268345742.

The spelling of 1170661639 in words is "one billion, one hundred seventy million, six hundred sixty-one thousand, six hundred thirty-nine".