136499664 has 160 divisors (see below), whose sum is σ = 445685760. Its totient is φ = 35076096.

The previous prime is 136499611. The next prime is 136499669. The reversal of 136499664 is 466994631.

It is a super-2 number, since 2×136499664² = 37264316544225792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136499669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130857 + ... + 131895.

It is an arithmetic number, because the mean of its divisors is an integer number (2785536).

Almost surely, 2^136499664 is an apocalyptic number.

136499664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136499664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222842880).

136499664 is an abundant number, since it is smaller than the sum of its proper divisors (309186096).

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

136499664 is a wasteful number, since it uses less digits than its factorization.

136499664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097 (or 1091 counting only the distinct ones).

The product of its digits is 839808, while the sum is 48.

The square root of 136499664 is about 11683.3070660665. The cubic root of 136499664 is about 514.8853409871.

The spelling of 136499664 in words is "one hundred thirty-six million, four hundred ninety-nine thousand, six hundred sixty-four".