136649670 has 32 divisors (see below), whose sum is σ = 342220032. Its totient is φ = 34855392.

The previous prime is 136649659. The next prime is 136649677. The reversal of 136649670 is 76946631.

It is a super-2 number, since 2×136649670² = 37346264622217800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136649677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98332 + ... + 99711.

It is an arithmetic number, because the mean of its divisors is an integer number (10694376).

Almost surely, 2^136649670 is an apocalyptic number.

136649670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136649670 is an abundant number, since it is smaller than the sum of its proper divisors (205570362).

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

136649670 is a wasteful number, since it uses less digits than its factorization.

136649670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198076.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 136649670 is about 11689.7249753790. The cubic root of 136649670 is about 515.0738826355.

The spelling of 136649670 in words is "one hundred thirty-six million, six hundred forty-nine thousand, six hundred seventy".