526640365 has 24 divisors (see below), whose sum is σ = 674238312. Its totient is φ = 394813440.

The previous prime is 526640363. The next prime is 526640417. The reversal of 526640365 is 563046625.

It can be written as a sum of positive squares in 12 ways, for example, as 42068196 + 484572169 = 6486^2 + 22013^2 .

It is not a de Polignac number, because 526640365 - 2¹ = 526640363 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (526640363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 405397 + ... + 406693.

It is an arithmetic number, because the mean of its divisors is an integer number (28093263).

Almost surely, 2^526640365 is an apocalyptic number.

It is an amenable number.

526640365 is a deficient number, since it is larger than the sum of its proper divisors (147597947).

526640365 is a wasteful number, since it uses less digits than its factorization.

526640365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617 (or 1600 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 526640365 is about 22948.6462563699. The cubic root of 526640365 is about 807.5536437124.

The spelling of 526640365 in words is "five hundred twenty-six million, six hundred forty thousand, three hundred sixty-five".