68081629 has 12 divisors (see below), whose sum is σ = 86397408. Its totient is φ = 53050200.

The previous prime is 68081623. The next prime is 68081641. The reversal of 68081629 is 92618086.

It is not a de Polignac number, because 68081629 - 2⁷ = 68081501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68081591 and 68081600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68081623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62617 + ... + 63694.

It is an arithmetic number, because the mean of its divisors is an integer number (7199784).

Almost surely, 2^68081629 is an apocalyptic number.

It is an amenable number.

68081629 is a deficient number, since it is larger than the sum of its proper divisors (18315779).

68081629 is a wasteful number, since it uses less digits than its factorization.

68081629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126336 (or 126329 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 68081629 is about 8251.1592518870. The cubic root of 68081629 is about 408.3287691100.

The spelling of 68081629 in words is "sixty-eight million, eighty-one thousand, six hundred twenty-nine".