8561601246 has 32 divisors (see below), whose sum is σ = 18803586816. Its totient is φ = 2577240000.

The previous prime is 8561601233. The next prime is 8561601247. The reversal of 8561601246 is 6421061658.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8561601247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419575 + ... + 439506.

It is an arithmetic number, because the mean of its divisors is an integer number (587612088).

Almost surely, 2^8561601246 is an apocalyptic number.

8561601246 is an abundant number, since it is smaller than the sum of its proper divisors (10241985570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8561601246 is a wasteful number, since it uses less digits than its factorization.

8561601246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859248.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 8561601246 is about 92528.9211328004. The cubic root of 8561601246 is about 2045.7457876908.

The spelling of 8561601246 in words is "eight billion, five hundred sixty-one million, six hundred one thousand, two hundred forty-six".