2391104661 has 8 divisors (see below), whose sum is σ = 3477970464. Its totient is φ = 1449154320.

The previous prime is 2391104659. The next prime is 2391104671. The reversal of 2391104661 is 1664011932.

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

It is not a de Polignac number, because 2391104661 - 2¹ = 2391104659 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 72457717 = 2391104661 / (2 + 3 + 9 + 1 + 1 + 0 + 4 + 6 + 6 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2391104641) 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, 36228826 + ... + 36228891.

It is an arithmetic number, because the mean of its divisors is an integer number (434746308).

Almost surely, 2^2391104661 is an apocalyptic number.

It is an amenable number.

2391104661 is a deficient number, since it is larger than the sum of its proper divisors (1086865803).

2391104661 is a wasteful number, since it uses less digits than its factorization.

2391104661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72457731.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 2391104661 is about 48898.9229022481. The cubic root of 2391104661 is about 1337.2097320545.

The spelling of 2391104661 in words is "two billion, three hundred ninety-one million, one hundred four thousand, six hundred sixty-one".