136691201 has 4 divisors (see below), whose sum is σ = 136920000. Its totient is φ = 136462404.

The previous prime is 136691173. The next prime is 136691207. The reversal of 136691201 is 102196631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 136691201 - 2¹⁸ = 136429057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136691207) 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 3 ways as a sum of consecutive naturals, for example, 113501 + ... + 114698.

It is an arithmetic number, because the mean of its divisors is an integer number (34230000).

Almost surely, 2^136691201 is an apocalyptic number.

It is an amenable number.

136691201 is a deficient number, since it is larger than the sum of its proper divisors (228799).

136691201 is an equidigital number, since it uses as much as digits as its factorization.

136691201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228798.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 136691201 is about 11691.5012295257. The cubic root of 136691201 is about 515.1260583113.

The spelling of 136691201 in words is "one hundred thirty-six million, six hundred ninety-one thousand, two hundred one".