135890563 has 2 divisors, whose sum is σ = 135890564. Its totient is φ = 135890562.

The previous prime is 135890519. The next prime is 135890591. The reversal of 135890563 is 365098531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135890563 is a prime.

It is a super-2 number, since 2×135890563² = 36932490224913938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135891563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67945281 + 67945282.

It is an arithmetic number, because the mean of its divisors is an integer number (67945282).

Almost surely, 2^135890563 is an apocalyptic number.

135890563 is a deficient number, since it is larger than the sum of its proper divisors (1).

135890563 is an equidigital number, since it uses as much as digits as its factorization.

135890563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 135890563 is about 11657.2107727363. The cubic root of 135890563 is about 514.1183432028.

The spelling of 135890563 in words is "one hundred thirty-five million, eight hundred ninety thousand, five hundred sixty-three".