136398506 has 8 divisors (see below), whose sum is σ = 204729444. Its totient is φ = 68155360.

The previous prime is 136398499. The next prime is 136398541. The reversal of 136398506 is 605893631.

It can be written as a sum of positive squares in 2 ways, for example, as 117831025 + 18567481 = 10855^2 + 4309^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17915 + ... + 24366.

Almost surely, 2^136398506 is an apocalyptic number.

136398506 is a deficient number, since it is larger than the sum of its proper divisors (68330938).

136398506 is a wasteful number, since it uses less digits than its factorization.

136398506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43896.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 136398506 is about 11678.9770956193. The cubic root of 136398506 is about 514.7581181023.

The spelling of 136398506 in words is "one hundred thirty-six million, three hundred ninety-eight thousand, five hundred six".