402487565 has 12 divisors (see below), whose sum is σ = 492287124. Its totient is φ = 315903744.

The previous prime is 402487537. The next prime is 402487567. The reversal of 402487565 is 565784204.

402487565 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 3721 + 402483844 = 61^2 + 20062^2 .

It is not a de Polignac number, because 402487565 - 2¹⁶ = 402422029 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402487567) 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 11 ways as a sum of consecutive naturals, for example, 284 + ... + 28373.

It is an arithmetic number, because the mean of its divisors is an integer number (41023927).

Almost surely, 2^402487565 is an apocalyptic number.

It is an amenable number.

402487565 is a deficient number, since it is larger than the sum of its proper divisors (89799559).

402487565 is an equidigital number, since it uses as much as digits as its factorization.

402487565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28768 (or 28715 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 41.

The square root of 402487565 is about 20062.0927372994. The cubic root of 402487565 is about 738.3305223812.

The spelling of 402487565 in words is "four hundred two million, four hundred eighty-seven thousand, five hundred sixty-five".