265197604 has 36 divisors (see below), whose sum is σ = 541537164. Its totient is φ = 113304576.

The previous prime is 265197601. The next prime is 265197607. The reversal of 265197604 is 406791562.

265197604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (265197601) and next prime (265197607).

It can be written as a sum of positive squares in 2 ways, for example, as 81540900 + 183656704 = 9030^2 + 13552^2 .

It is not an unprimeable number, because it can be changed into a prime (265197601) 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, 67272 + ... + 71104.

It is an arithmetic number, because the mean of its divisors is an integer number (15042699).

Almost surely, 2^265197604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265197604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270768582).

265197604 is an abundant number, since it is smaller than the sum of its proper divisors (276339560).

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

265197604 is a wasteful number, since it uses less digits than its factorization.

265197604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204 (or 4195 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 265197604 is about 16284.8888236917. Note that the first 4 decimals coincide. The cubic root of 265197604 is about 642.4754422424.

The spelling of 265197604 in words is "two hundred sixty-five million, one hundred ninety-seven thousand, six hundred four".