135640664 has 8 divisors (see below), whose sum is σ = 254326260. Its totient is φ = 67820328.

The previous prime is 135640657. The next prime is 135640693. The reversal of 135640664 is 466046531.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8477534 + ... + 8477549.

Almost surely, 2^135640664 is an apocalyptic number.

It is an amenable number.

135640664 is a deficient number, since it is larger than the sum of its proper divisors (118685596).

135640664 is a wasteful number, since it uses less digits than its factorization.

135640664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16955089 (or 16955085 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 135640664 is about 11646.4871957170. The cubic root of 135640664 is about 513.8030000002.

The spelling of 135640664 in words is "one hundred thirty-five million, six hundred forty thousand, six hundred sixty-four".