7217902866 has 16 divisors (see below), whose sum is σ = 14447682144. Its totient is φ = 2403988224.

The previous prime is 7217902841. The next prime is 7217902871. The reversal of 7217902866 is 6682097127.

It is a super-2 number, since 2×7217902866² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486940 + ... + 501543.

It is an arithmetic number, because the mean of its divisors is an integer number (902980134).

Almost surely, 2^7217902866 is an apocalyptic number.

7217902866 is an abundant number, since it is smaller than the sum of its proper divisors (7229779278).

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

7217902866 is a wasteful number, since it uses less digits than its factorization.

7217902866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989705.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 7217902866 is about 84958.2418956513. The cubic root of 7217902866 is about 1932.5779099868.

The spelling of 7217902866 in words is "seven billion, two hundred seventeen million, nine hundred two thousand, eight hundred sixty-six".