471198661 has 2 divisors, whose sum is σ = 471198662. Its totient is φ = 471198660.

The previous prime is 471198653. The next prime is 471198697. The reversal of 471198661 is 166891174.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 410265025 + 60933636 = 20255^2 + 7806^2 .

It is a cyclic number.

It is not a de Polignac number, because 471198661 - 2³ = 471198653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (471195661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235599330 + 235599331.

It is an arithmetic number, because the mean of its divisors is an integer number (235599331).

Almost surely, 2^471198661 is an apocalyptic number.

It is an amenable number.

471198661 is a deficient number, since it is larger than the sum of its proper divisors (1).

471198661 is an equidigital number, since it uses as much as digits as its factorization.

471198661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 43.

The square root of 471198661 is about 21707.1108395383. The cubic root of 471198661 is about 778.1584107222.

The spelling of 471198661 in words is "four hundred seventy-one million, one hundred ninety-eight thousand, six hundred sixty-one".