136614640 has 40 divisors (see below), whose sum is σ = 319497408. Its totient is φ = 54324480.

The previous prime is 136614631. The next prime is 136614659. The reversal of 136614640 is 46416631.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8905 + ... + 18775.

Almost surely, 2^136614640 is an apocalyptic number.

136614640 is a gapful number since it is divisible by the number (10) 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 136614640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159748704).

136614640 is an abundant number, since it is smaller than the sum of its proper divisors (182882768).

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

136614640 is a wasteful number, since it uses less digits than its factorization.

136614640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10057 (or 10051 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 136614640 is about 11688.2265549569. The cubic root of 136614640 is about 515.0298659903.

The spelling of 136614640 in words is "one hundred thirty-six million, six hundred fourteen thousand, six hundred forty".