135866646 has 28 divisors (see below), whose sum is σ = 305563452. Its totient is φ = 45288396.

The previous prime is 135866609. The next prime is 135866659. The reversal of 135866646 is 646668531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 45136 + ... + 48051.

Almost surely, 2^135866646 is an apocalyptic number.

135866646 is an abundant number, since it is smaller than the sum of its proper divisors (169696806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135866646 is an frugal number, since it uses more digits than its factorization.

135866646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93207 (or 93192 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 135866646 is about 11656.1848818556. The cubic root of 135866646 is about 514.0881794946.

The spelling of 135866646 in words is "one hundred thirty-five million, eight hundred sixty-six thousand, six hundred forty-six".