135998974 has 8 divisors (see below), whose sum is σ = 206580960. Its totient is φ = 67138656.

The previous prime is 135998971. The next prime is 135998983. The reversal of 135998974 is 479899531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135998971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430219 + ... + 430534.

It is an arithmetic number, because the mean of its divisors is an integer number (25822620).

Almost surely, 2^135998974 is an apocalyptic number.

135998974 is a deficient number, since it is larger than the sum of its proper divisors (70581986).

135998974 is an equidigital number, since it uses as much as digits as its factorization.

135998974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860834.

The product of its digits is 2449440, while the sum is 55.

The square root of 135998974 is about 11661.8598002205. The cubic root of 135998974 is about 514.2550249250.

The spelling of 135998974 in words is "one hundred thirty-five million, nine hundred ninety-eight thousand, nine hundred seventy-four".