136770215 has 4 divisors (see below), whose sum is σ = 164124264. Its totient is φ = 109416168.

The previous prime is 136770209. The next prime is 136770223. The reversal of 136770215 is 512077631.

136770215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136770215 is a prime.

It is a super-2 number, since 2×136770215² = 37412183422292450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 13677017 + ... + 13677026.

It is an arithmetic number, because the mean of its divisors is an integer number (41031066).

Almost surely, 2^136770215 is an apocalyptic number.

136770215 is a deficient number, since it is larger than the sum of its proper divisors (27354049).

136770215 is an equidigital number, since it uses as much as digits as its factorization.

136770215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27354048.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 136770215 is about 11694.8798625723. The cubic root of 136770215 is about 515.2252949605.

The spelling of 136770215 in words is "one hundred thirty-six million, seven hundred seventy thousand, two hundred fifteen".