136661070 has 128 divisors (see below), whose sum is σ = 408167424. Its totient is φ = 28514304.

The previous prime is 136661059. The next prime is 136661081. The reversal of 136661070 is 70166631.

It is an interprime number because it is at equal distance from previous prime (136661059) and next prime (136661081).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 308269 + ... + 308711.

It is an arithmetic number, because the mean of its divisors is an integer number (3188808).

Almost surely, 2^136661070 is an apocalyptic number.

136661070 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 136661070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204083712).

136661070 is an abundant number, since it is smaller than the sum of its proper divisors (271506354).

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

136661070 is a wasteful number, since it uses less digits than its factorization.

136661070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 136661070 is about 11690.2125729176. The cubic root of 136661070 is about 515.0882055850.

The spelling of 136661070 in words is "one hundred thirty-six million, six hundred sixty-one thousand, seventy".