68529155 has 4 divisors (see below), whose sum is σ = 82234992. Its totient is φ = 54823320.

The previous prime is 68529137. The next prime is 68529157. The reversal of 68529155 is 55192586.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68529155 - 2²⁶ = 1420291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68529157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6852911 + ... + 6852920.

It is an arithmetic number, because the mean of its divisors is an integer number (20558748).

Almost surely, 2^68529155 is an apocalyptic number.

68529155 is a deficient number, since it is larger than the sum of its proper divisors (13705837).

68529155 is a wasteful number, since it uses less digits than its factorization.

68529155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13705836.

The product of its digits is 108000, while the sum is 41.

The square root of 68529155 is about 8278.2338092132. The cubic root of 68529155 is about 409.2215150586.

The spelling of 68529155 in words is "sixty-eight million, five hundred twenty-nine thousand, one hundred fifty-five".