135623663 has 8 divisors (see below), whose sum is σ = 161737728. Its totient is φ = 111194424.

The previous prime is 135623651. The next prime is 135623669. The reversal of 135623663 is 366326531.

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 135623663 - 2⁶ = 135623599 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 (135623669) 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, 421031 + ... + 421352.

It is an arithmetic number, because the mean of its divisors is an integer number (20217216).

Almost surely, 2^135623663 is an apocalyptic number.

135623663 is a deficient number, since it is larger than the sum of its proper divisors (26114065).

135623663 is an equidigital number, since it uses as much as digits as its factorization.

135623663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842413.

The product of its digits is 58320, while the sum is 35.

The square root of 135623663 is about 11645.7572961143. The cubic root of 135623663 is about 513.7815326675.

The spelling of 135623663 in words is "one hundred thirty-five million, six hundred twenty-three thousand, six hundred sixty-three".