68479529 has 4 divisors (see below), whose sum is σ = 68673876. Its totient is φ = 68285184.

The previous prime is 68479513. The next prime is 68479547. The reversal of 68479529 is 92597486.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40896025 + 27583504 = 6395^2 + 5252^2 .

It is a cyclic number.

It is not a de Polignac number, because 68479529 - 2⁴ = 68479513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68479549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96644 + ... + 97349.

It is an arithmetic number, because the mean of its divisors is an integer number (17168469).

Almost surely, 2^68479529 is an apocalyptic number.

It is an amenable number.

68479529 is a deficient number, since it is larger than the sum of its proper divisors (194347).

68479529 is a wasteful number, since it uses less digits than its factorization.

68479529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194346.

The product of its digits is 1088640, while the sum is 50.

The square root of 68479529 is about 8275.2358878766. The cubic root of 68479529 is about 409.1227107324.

The spelling of 68479529 in words is "sixty-eight million, four hundred seventy-nine thousand, five hundred twenty-nine".