2216655464 has 16 divisors (see below), whose sum is σ = 4234649220. Its totient is φ = 1087415680.

The previous prime is 2216655443. The next prime is 2216655487. The reversal of 2216655464 is 4645566122.

It can be written as a sum of positive squares in 2 ways, for example, as 2179956100 + 36699364 = 46690^2 + 6058^2 .

It is a super-2 number, since 2×2216655464² = 9827122892162110592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2613557 + ... + 2614404.

Almost surely, 2^2216655464 is an apocalyptic number.

It is an amenable number.

2216655464 is a deficient number, since it is larger than the sum of its proper divisors (2017993756).

2216655464 is a wasteful number, since it uses less digits than its factorization.

2216655464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5228020 (or 5228016 counting only the distinct ones).

The product of its digits is 345600, while the sum is 41.

The square root of 2216655464 is about 47081.3706682378. The cubic root of 2216655464 is about 1303.8653131619.

The spelling of 2216655464 in words is "two billion, two hundred sixteen million, six hundred fifty-five thousand, four hundred sixty-four".