68634135 has 24 divisors (see below), whose sum is σ = 123374160. Its totient is φ = 36604224.

The previous prime is 68634133. The next prime is 68634157. The reversal of 68634135 is 53143686.

68634135 is a `hidden beast` number, since 6 + 8 + 634 + 13 + 5 = 666.

It is not a de Polignac number, because 68634135 - 2¹ = 68634133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68634135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68634133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27030 + ... + 29459.

It is an arithmetic number, because the mean of its divisors is an integer number (5140590).

Almost surely, 2^68634135 is an apocalyptic number.

68634135 is a deficient number, since it is larger than the sum of its proper divisors (54740025).

68634135 is an equidigital number, since it uses as much as digits as its factorization.

68634135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56509 (or 56497 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 68634135 is about 8284.5721072364. The cubic root of 68634135 is about 409.4303709654.

The spelling of 68634135 in words is "sixty-eight million, six hundred thirty-four thousand, one hundred thirty-five".