68629240 has 32 divisors (see below), whose sum is σ = 161131680. Its totient is φ = 26257792.

The previous prime is 68629229. The next prime is 68629261. The reversal of 68629240 is 4292686.

It is a self number, because there is not a number n which added to its sum of digits gives 68629240.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 36379 + ... + 38218.

It is an arithmetic number, because the mean of its divisors is an integer number (5035365).

Almost surely, 2^68629240 is an apocalyptic number.

It is an amenable number.

68629240 is an abundant number, since it is smaller than the sum of its proper divisors (92502440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68629240 is a wasteful number, since it uses less digits than its factorization.

68629240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74631 (or 74627 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 68629240 is about 8284.2766733131. The cubic root of 68629240 is about 409.4206371824.

The spelling of 68629240 in words is "sixty-eight million, six hundred twenty-nine thousand, two hundred forty".