136891601 has 16 divisors (see below), whose sum is σ = 175286400. Its totient is φ = 103783680.

The previous prime is 136891583. The next prime is 136891609. The reversal of 136891601 is 106198631.

It is not a de Polignac number, because 136891601 - 2⁶ = 136891537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (136891609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21176 + ... + 26873.

It is an arithmetic number, because the mean of its divisors is an integer number (10955400).

Almost surely, 2^136891601 is an apocalyptic number.

136891601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

136891601 is a deficient number, since it is larger than the sum of its proper divisors (38394799).

136891601 is a wasteful number, since it uses less digits than its factorization.

136891601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48104.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 136891601 is about 11700.0684186034. The cubic root of 136891601 is about 515.3776737628.

The spelling of 136891601 in words is "one hundred thirty-six million, eight hundred ninety-one thousand, six hundred one".