136780145 has 8 divisors (see below), whose sum is σ = 172775040. Its totient is φ = 103664880.

The previous prime is 136780139. The next prime is 136780169. The reversal of 136780145 is 541087631.

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

It is not a de Polignac number, because 136780145 - 2⁴ = 136780129 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719801 + ... + 719990.

It is an arithmetic number, because the mean of its divisors is an integer number (21596880).

Almost surely, 2^136780145 is an apocalyptic number.

It is an amenable number.

136780145 is a deficient number, since it is larger than the sum of its proper divisors (35994895).

136780145 is a wasteful number, since it uses less digits than its factorization.

136780145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439815.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 136780145 is about 11695.3043996298. The cubic root of 136780145 is about 515.2377637167.

The spelling of 136780145 in words is "one hundred thirty-six million, seven hundred eighty thousand, one hundred forty-five".