136345561 has 8 divisors (see below), whose sum is σ = 152200224. Its totient is φ = 121067520.

The previous prime is 136345523. The next prime is 136345571. The reversal of 136345561 is 165543631.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136345561 is a prime.

It is a super-2 number, since 2×136345561² = 37180224008809442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136345571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143656 + ... + 144601.

It is an arithmetic number, because the mean of its divisors is an integer number (19025028).

Almost surely, 2^136345561 is an apocalyptic number.

136345561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

136345561 is a deficient number, since it is larger than the sum of its proper divisors (15854663).

136345561 is a wasteful number, since it uses less digits than its factorization.

136345561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288311.

The product of its digits is 32400, while the sum is 34.

The square root of 136345561 is about 11676.7101959413. The cubic root of 136345561 is about 514.6915059464.

The spelling of 136345561 in words is "one hundred thirty-six million, three hundred forty-five thousand, five hundred sixty-one".