68444431 has 8 divisors (see below), whose sum is σ = 79059024. Its totient is φ = 58561920.

The previous prime is 68444423. The next prime is 68444477. The reversal of 68444431 is 13444486.

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 68444431 - 2³ = 68444423 is a prime.

It is a super-2 number, since 2×68444431² = 9369280269827522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68444401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182820 + ... + 183193.

It is an arithmetic number, because the mean of its divisors is an integer number (9882378).

Almost surely, 2^68444431 is an apocalyptic number.

68444431 is a deficient number, since it is larger than the sum of its proper divisors (10614593).

68444431 is a wasteful number, since it uses less digits than its factorization.

68444431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366041.

The product of its digits is 36864, while the sum is 34.

The square root of 68444431 is about 8273.1149514557. The cubic root of 68444431 is about 409.0528025276.

Subtracting from 68444431 its reverse (13444486), we obtain a palindrome (54999945).

The spelling of 68444431 in words is "sixty-eight million, four hundred forty-four thousand, four hundred thirty-one".