135679990 has 32 divisors (see below), whose sum is σ = 258365376. Its totient is φ = 51194880.

The previous prime is 135679987. The next prime is 135680003. The reversal of 135679990 is 99976531.

135679990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12750 + ... + 20830.

It is an arithmetic number, because the mean of its divisors is an integer number (8073918).

Almost surely, 2^135679990 is an apocalyptic number.

135679990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135679990 is a deficient number, since it is larger than the sum of its proper divisors (122685386).

135679990 is a wasteful number, since it uses less digits than its factorization.

135679990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8184.

The product of its (nonzero) digits is 459270, while the sum is 49.

The square root of 135679990 is about 11648.1753935971. The cubic root of 135679990 is about 513.8526504609.

The spelling of 135679990 in words is "one hundred thirty-five million, six hundred seventy-nine thousand, nine hundred ninety".