61096661 has 4 divisors (see below), whose sum is σ = 61292172. Its totient is φ = 60901152.

The previous prime is 61096643. The next prime is 61096699. The reversal of 61096661 is 16669016.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14938225 + 46158436 = 3865^2 + 6794^2 .

It is a cyclic number.

It is not a de Polignac number, because 61096661 - 2¹⁴ = 61080277 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 (61096621) 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, 97286 + ... + 97911.

It is an arithmetic number, because the mean of its divisors is an integer number (15323043).

Almost surely, 2^61096661 is an apocalyptic number.

It is an amenable number.

61096661 is a deficient number, since it is larger than the sum of its proper divisors (195511).

61096661 is a wasteful number, since it uses less digits than its factorization.

61096661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195510.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 61096661 is about 7816.4353128520. The cubic root of 61096661 is about 393.8575352211.

The spelling of 61096661 in words is "sixty-one million, ninety-six thousand, six hundred sixty-one".