3061661791 has 8 divisors (see below), whose sum is σ = 3150979920. Its totient is φ = 2973167232.

The previous prime is 3061661777. The next prime is 3061661833. The reversal of 3061661791 is 1971661603.

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

It is not a de Polignac number, because 3061661791 - 2¹³ = 3061653599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3061661191) 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, 198346 + ... + 213223.

It is an arithmetic number, because the mean of its divisors is an integer number (393872490).

Almost surely, 2^3061661791 is an apocalyptic number.

3061661791 is a deficient number, since it is larger than the sum of its proper divisors (89318129).

3061661791 is a wasteful number, since it uses less digits than its factorization.

3061661791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411785.

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

The square root of 3061661791 is about 55332.2852501142. The cubic root of 3061661791 is about 1452.0639321457.

The spelling of 3061661791 in words is "three billion, sixty-one million, six hundred sixty-one thousand, seven hundred ninety-one".