2265699987 has 12 divisors (see below), whose sum is σ = 3273109840. Its totient is φ = 1510267248.

The previous prime is 2265699979. The next prime is 2265699991. The reversal of 2265699987 is 7899965622.

2265699987 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2265699987 - 2³ = 2265699979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2265699937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94314 + ... + 115872.

Almost surely, 2^2265699987 is an apocalyptic number.

2265699987 is a deficient number, since it is larger than the sum of its proper divisors (1007409853).

2265699987 is a wasteful number, since it uses less digits than its factorization.

2265699987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33242 (or 33239 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The square root of 2265699987 is about 47599.3696071702. The cubic root of 2265699987 is about 1313.4114581075.

The spelling of 2265699987 in words is "two billion, two hundred sixty-five million, six hundred ninety-nine thousand, nine hundred eighty-seven".