64688135 has 8 divisors (see below), whose sum is σ = 77688096. Its totient is φ = 51708960.

The previous prime is 64688101. The next prime is 64688159. The reversal of 64688135 is 53188646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64688135 - 2¹⁶ = 64622599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64688092 and 64688101.

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, 2765 + ... + 11705.

It is an arithmetic number, because the mean of its divisors is an integer number (9711012).

Almost surely, 2^64688135 is an apocalyptic number.

64688135 is a deficient number, since it is larger than the sum of its proper divisors (12999961).

64688135 is a wasteful number, since it uses less digits than its factorization.

64688135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10393.

The product of its digits is 138240, while the sum is 41.

The square root of 64688135 is about 8042.8934470127. The cubic root of 64688135 is about 401.4285069302.

The spelling of 64688135 in words is "sixty-four million, six hundred eighty-eight thousand, one hundred thirty-five".