135687764 has 24 divisors (see below), whose sum is σ = 248209920. Its totient is φ = 64781024.

The previous prime is 135687763. The next prime is 135687809. The reversal of 135687764 is 467786531.

It is a super-2 number, since 2×135687764² = 36822338598639392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135687763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78542 + ... + 80250.

It is an arithmetic number, because the mean of its divisors is an integer number (10342080).

Almost surely, 2^135687764 is an apocalyptic number.

It is an amenable number.

135687764 is a deficient number, since it is larger than the sum of its proper divisors (112522156).

135687764 is a wasteful number, since it uses less digits than its factorization.

135687764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599 (or 2597 counting only the distinct ones).

The product of its digits is 846720, while the sum is 47.

The square root of 135687764 is about 11648.5090891496. The cubic root of 135687764 is about 513.8624642740.

The spelling of 135687764 in words is "one hundred thirty-five million, six hundred eighty-seven thousand, seven hundred sixty-four".