68438447 has 48 divisors (see below), whose sum is σ = 93844800. Its totient is φ = 49674240.

The previous prime is 68438443. The next prime is 68438459. The reversal of 68438447 is 74483486.

It is not a de Polignac number, because 68438447 - 2² = 68438443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68438398 and 68438407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68438443) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 705503 + ... + 705599.

It is an arithmetic number, because the mean of its divisors is an integer number (1955100).

Almost surely, 2^68438447 is an apocalyptic number.

68438447 is a deficient number, since it is larger than the sum of its proper divisors (25406353).

68438447 is a wasteful number, since it uses less digits than its factorization.

68438447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 132 counting only the distinct ones).

The product of its digits is 516096, while the sum is 44.

The square root of 68438447 is about 8272.7532901689. The cubic root of 68438447 is about 409.0408812104.

The spelling of 68438447 in words is "sixty-eight million, four hundred thirty-eight thousand, four hundred forty-seven".