471563661 has 12 divisors (see below), whose sum is σ = 649692096. Its totient is φ = 304232760.

The previous prime is 471563639. The next prime is 471563669. The reversal of 471563661 is 166365174.

It is not a de Polignac number, because 471563661 - 2¹⁵ = 471530893 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (471563669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78901 + ... + 84666.

It is an arithmetic number, because the mean of its divisors is an integer number (54141008).

Almost surely, 2^471563661 is an apocalyptic number.

It is an amenable number.

471563661 is a deficient number, since it is larger than the sum of its proper divisors (178128435).

471563661 is a wasteful number, since it uses less digits than its factorization.

471563661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163632 (or 163601 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 471563661 is about 21715.5165952827. The cubic root of 471563661 is about 778.3592846048.

The spelling of 471563661 in words is "four hundred seventy-one million, five hundred sixty-three thousand, six hundred sixty-one".