2361610661 has 4 divisors (see below), whose sum is σ = 2365029024. Its totient is φ = 2358192300.

The previous prime is 2361610651. The next prime is 2361610687. The reversal of 2361610661 is 1660161632.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2361610661 - 2¹⁰ = 2361609637 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 (2361610631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1708145 + ... + 1709526.

It is an arithmetic number, because the mean of its divisors is an integer number (591257256).

Almost surely, 2^2361610661 is an apocalyptic number.

It is an amenable number.

2361610661 is a deficient number, since it is larger than the sum of its proper divisors (3418363).

2361610661 is an equidigital number, since it uses as much as digits as its factorization.

2361610661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3418362.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 2361610661 is about 48596.4058444655. The cubic root of 2361610661 is about 1331.6888604419.

The spelling of 2361610661 in words is "two billion, three hundred sixty-one million, six hundred ten thousand, six hundred sixty-one".