6661147463 has 4 divisors (see below), whose sum is σ = 6676970088. Its totient is φ = 6645324840.

The previous prime is 6661147457. The next prime is 6661147477. The reversal of 6661147463 is 3647411666.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6661147463 - 2¹⁴ = 6661131079 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 (6661147403) 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, 7910681 + ... + 7911522.

It is an arithmetic number, because the mean of its divisors is an integer number (1669242522).

Almost surely, 2^6661147463 is an apocalyptic number.

6661147463 is a deficient number, since it is larger than the sum of its proper divisors (15822625).

6661147463 is a wasteful number, since it uses less digits than its factorization.

6661147463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15822624.

The product of its digits is 435456, while the sum is 44.

The square root of 6661147463 is about 81615.8530127573. The cubic root of 6661147463 is about 1881.5525374186.

The spelling of 6661147463 in words is "six billion, six hundred sixty-one million, one hundred forty-seven thousand, four hundred sixty-three".