136957 has 4 divisors (see below), whose sum is σ = 138016.
Its totient is φ = 135900.
The previous prime is 136951. The next prime is 136963. The reversal of 136957 is 759631.
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, and also a brilliant number, because the two primes have the same length.
It is an interprime number because it is at equal distance from previous prime (136951) and next prime (136963).
It is not a de Polignac number, because 136957 - 23 = 136949 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (136951) 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, 303 + ... + 604.
It is an arithmetic number, because the mean of its divisors is an integer number (34504).
2136957 is an apocalyptic number.
It is an amenable number.
136957 is a deficient number, since it is larger than the sum of its proper divisors (1059).
136957 is an equidigital number, since it uses as much as digits as its factorization.
136957 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1058.
The product of its digits is 5670, while the sum is 31.
The square root of 136957 is about 370.0770190109.
The cubic root of 136957 is about 51.5459733383.
The spelling of 136957 in words is "one hundred thirty-six thousand, nine hundred fifty-seven".