2239247665 has 16 divisors (see below), whose sum is σ = 2702840400. Its totient is φ = 1780928512.

The previous prime is 2239247657. The next prime is 2239247671. The reversal of 2239247665 is 5667429322.

It can be written as a sum of positive squares in 8 ways, for example, as 1022912289 + 1216335376 = 31983^2 + 34876^2 .

It is a cyclic number.

It is not a de Polignac number, because 2239247665 - 2³ = 2239247657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1081251 + ... + 1083319.

It is an arithmetic number, because the mean of its divisors is an integer number (168927525).

Almost surely, 2^2239247665 is an apocalyptic number.

It is an amenable number.

2239247665 is a deficient number, since it is larger than the sum of its proper divisors (463592735).

2239247665 is a wasteful number, since it uses less digits than its factorization.

2239247665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236.

The product of its digits is 1088640, while the sum is 46.

The square root of 2239247665 is about 47320.6896082464. The cubic root of 2239247665 is about 1308.2800232875.

The spelling of 2239247665 in words is "two billion, two hundred thirty-nine million, two hundred forty-seven thousand, six hundred sixty-five".