135990620 has 24 divisors (see below), whose sum is σ = 285804288. Its totient is φ = 54353600.

The previous prime is 135990601. The next prime is 135990623. The reversal of 135990620 is 26099531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135990623) 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, 40610 + ... + 43830.

It is an arithmetic number, because the mean of its divisors is an integer number (11908512).

Almost surely, 2^135990620 is an apocalyptic number.

135990620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135990620 is an abundant number, since it is smaller than the sum of its proper divisors (149813668).

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

135990620 is a wasteful number, since it uses less digits than its factorization.

135990620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5341 (or 5339 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 135990620 is about 11661.5016185738. The cubic root of 135990620 is about 514.2444950062.

The spelling of 135990620 in words is "one hundred thirty-five million, nine hundred ninety thousand, six hundred twenty".