68864437 has 8 divisors (see below), whose sum is σ = 72062136. Its totient is φ = 65737152.

The previous prime is 68864429. The next prime is 68864441. The reversal of 68864437 is 73446886.

68864437 is nontrivially palindromic in base 6.

It can be written as a sum of positive squares in 4 ways, for example, as 8242641 + 60621796 = 2871^2 + 7786^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 68864437 - 2³ = 68864429 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 (68814437) 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 7 ways as a sum of consecutive naturals, for example, 15598 + ... + 19519.

It is an arithmetic number, because the mean of its divisors is an integer number (9007767).

Almost surely, 2^68864437 is an apocalyptic number.

It is an amenable number.

68864437 is a deficient number, since it is larger than the sum of its proper divisors (3197699).

68864437 is a wasteful number, since it uses less digits than its factorization.

68864437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35207.

The product of its digits is 774144, while the sum is 46.

The square root of 68864437 is about 8298.4599173582. The cubic root of 68864437 is about 409.8878078908.

The spelling of 68864437 in words is "sixty-eight million, eight hundred sixty-four thousand, four hundred thirty-seven".