136857601 has 4 divisors (see below), whose sum is σ = 138136752. Its totient is φ = 135578452.

The previous prime is 136857563. The next prime is 136857629. The reversal of 136857601 is 106758631.

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 136857601 - 2¹⁹ = 136333313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136857661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639415 + ... + 639628.

It is an arithmetic number, because the mean of its divisors is an integer number (34534188).

Almost surely, 2^136857601 is an apocalyptic number.

It is an amenable number.

136857601 is a deficient number, since it is larger than the sum of its proper divisors (1279151).

136857601 is a wasteful number, since it uses less digits than its factorization.

136857601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279150.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 136857601 is about 11698.6153454159. The cubic root of 136857601 is about 515.3350018197.

The spelling of 136857601 in words is "one hundred thirty-six million, eight hundred fifty-seven thousand, six hundred one".