68729590 has 8 divisors (see below), whose sum is σ = 123713280. Its totient is φ = 27491832.

The previous prime is 68729581. The next prime is 68729597. The reversal of 68729590 is 9592786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 68729590.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68729597) 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, 3436470 + ... + 3436489.

It is an arithmetic number, because the mean of its divisors is an integer number (15464160).

Almost surely, 2^68729590 is an apocalyptic number.

68729590 is a deficient number, since it is larger than the sum of its proper divisors (54983690).

68729590 is a wasteful number, since it uses less digits than its factorization.

68729590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6872966.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 68729590 is about 8290.3311152209. The cubic root of 68729590 is about 409.6200922647.

The spelling of 68729590 in words is "sixty-eight million, seven hundred twenty-nine thousand, five hundred ninety".