68393629 has 4 divisors (see below), whose sum is σ = 70752060. Its totient is φ = 66035200.

The previous prime is 68393623. The next prime is 68393639. The reversal of 68393629 is 92639386.

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 35640900 + 32752729 = 5970^2 + 5723^2 .

It is a cyclic number.

It is not a de Polignac number, because 68393629 - 2³ = 68393621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68393621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1179172 + ... + 1179229.

It is an arithmetic number, because the mean of its divisors is an integer number (17688015).

Almost surely, 2^68393629 is an apocalyptic number.

It is an amenable number.

68393629 is a deficient number, since it is larger than the sum of its proper divisors (2358431).

68393629 is a wasteful number, since it uses less digits than its factorization.

68393629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358430.

The product of its digits is 419904, while the sum is 46.

The square root of 68393629 is about 8270.0440748523. The cubic root of 68393629 is about 408.9515727480.

The spelling of 68393629 in words is "sixty-eight million, three hundred ninety-three thousand, six hundred twenty-nine".