61006361 has 4 divisors (see below), whose sum is σ = 65699172. Its totient is φ = 56313552.

The previous prime is 61006349. The next prime is 61006391. The reversal of 61006361 is 16360016.

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 5593225 + 55413136 = 2365^2 + 7444^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61006361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61006391) 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, 2346386 + ... + 2346411.

It is an arithmetic number, because the mean of its divisors is an integer number (16424793).

Almost surely, 2^61006361 is an apocalyptic number.

It is an amenable number.

61006361 is a deficient number, since it is larger than the sum of its proper divisors (4692811).

61006361 is a wasteful number, since it uses less digits than its factorization.

61006361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4692810.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 61006361 is about 7810.6568865877. The cubic root of 61006361 is about 393.6634009267.

Adding to 61006361 its reverse (16360016), we get a palindrome (77366377).

The spelling of 61006361 in words is "sixty-one million, six thousand, three hundred sixty-one".