7471998566 has 16 divisors (see below), whose sum is σ = 11289132864. Its totient is φ = 3709004904.

The previous prime is 7471998563. The next prime is 7471998617. The reversal of 7471998566 is 6658991747.

It is a junction number, because it is equal to n+sod(n) for n = 7471998499 and 7471998508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7471998563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296621 + ... + 320823.

It is an arithmetic number, because the mean of its divisors is an integer number (705570804).

Almost surely, 2^7471998566 is an apocalyptic number.

7471998566 is a deficient number, since it is larger than the sum of its proper divisors (3817134298).

7471998566 is a wasteful number, since it uses less digits than its factorization.

7471998566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25315.

The product of its digits is 22861440, while the sum is 62.

The square root of 7471998566 is about 86440.7228451961. The cubic root of 7471998566 is about 1954.9947402086.

The spelling of 7471998566 in words is "seven billion, four hundred seventy-one million, nine hundred ninety-eight thousand, five hundred sixty-six".