947106561636 has 81 divisors (see below), whose sum is σ = 2434881158073. Its totient is φ = 310409958240.

The previous prime is 947106561629. The next prime is 947106561683. The reversal of 947106561636 is 636165601749.

It is a happy number.

The square root of 947106561636 is 973194.

It is a perfect power (a square), and thus also a powerful number.

947106561636 is a `hidden beast` number, since 9 + 4 + 7 + 10 + 6 + 5 + 616 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30798144036 + 916308417600 = 175494^2 + 957240^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 356187675 + ... + 356190333.

Almost surely, 2^947106561636 is an apocalyptic number.

947106561636 is the 973194-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 947106561636

947106561636 is an abundant number, since it is smaller than the sum of its proper divisors (1487774596437).

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

947106561636 is an equidigital number, since it uses as much as digits as its factorization.

947106561636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450 (or 2725 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 947106561636 in words is "nine hundred forty-seven billion, one hundred six million, five hundred sixty-one thousand, six hundred thirty-six".