135640463 has 8 divisors (see below), whose sum is σ = 155089920. Its totient is φ = 116209080.

The previous prime is 135640457. The next prime is 135640471. The reversal of 135640463 is 364046531.

135640463 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135640463 - 2¹⁶ = 135574927 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 (135640403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21818 + ... + 27336.

It is an arithmetic number, because the mean of its divisors is an integer number (19386240).

Almost surely, 2^135640463 is an apocalyptic number.

135640463 is a deficient number, since it is larger than the sum of its proper divisors (19449457).

135640463 is an equidigital number, since it uses as much as digits as its factorization.

135640463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9037.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 135640463 is about 11646.4785665024. The cubic root of 135640463 is about 513.8027462060.

Adding to 135640463 its reverse (364046531), we get a palindrome (499686994).

The spelling of 135640463 in words is "one hundred thirty-five million, six hundred forty thousand, four hundred sixty-three".