610045661 has 8 divisors (see below), whose sum is σ = 614552448. Its totient is φ = 605556000.

The previous prime is 610045649. The next prime is 610045669. The reversal of 610045661 is 166540016.

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 610045661 - 2¹⁰ = 610044637 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 (610045669) 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, 72146 + ... + 80156.

It is an arithmetic number, because the mean of its divisors is an integer number (76819056).

Almost surely, 2^610045661 is an apocalyptic number.

It is an amenable number.

610045661 is a deficient number, since it is larger than the sum of its proper divisors (4506787).

610045661 is a wasteful number, since it uses less digits than its factorization.

610045661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8563.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 610045661 is about 24699.1024330845. The cubic root of 610045661 is about 848.1137693900.

Adding to 610045661 its reverse (166540016), we get a palindrome (776585677).

The spelling of 610045661 in words is "six hundred ten million, forty-five thousand, six hundred sixty-one".