136691370 has 48 divisors (see below), whose sum is σ = 358225920. Its totient is φ = 36160992.

The previous prime is 136691363. The next prime is 136691371. The reversal of 136691370 is 73196631.

136691370 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (136691371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5451 + ... + 17409.

It is an arithmetic number, because the mean of its divisors is an integer number (7463040).

Almost surely, 2^136691370 is an apocalyptic number.

136691370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 136691370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179112960).

136691370 is an abundant number, since it is smaller than the sum of its proper divisors (221534550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136691370 is a wasteful number, since it uses less digits than its factorization.

136691370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12099 (or 12096 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 136691370 is about 11691.5084569956. The cubic root of 136691370 is about 515.1262706056.

The spelling of 136691370 in words is "one hundred thirty-six million, six hundred ninety-one thousand, three hundred seventy".