265140636 has 24 divisors (see below), whose sum is σ = 655053840. Its totient is φ = 83181312.

The previous prime is 265140581. The next prime is 265140679. The reversal of 265140636 is 636041562.

265140636 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 265140597 and 265140606.

It is a congruent number.

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, 649651 + ... + 650058.

It is an arithmetic number, because the mean of its divisors is an integer number (27293910).

Almost surely, 2^265140636 is an apocalyptic number.

It is an amenable number.

265140636 is an abundant number, since it is smaller than the sum of its proper divisors (389913204).

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

265140636 is a wasteful number, since it uses less digits than its factorization.

265140636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299733 (or 1299731 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 265140636 is about 16283.1396235493. The cubic root of 265140636 is about 642.4294348357.

The spelling of 265140636 in words is "two hundred sixty-five million, one hundred forty thousand, six hundred thirty-six".