68449946 has 8 divisors (see below), whose sum is σ = 102934740. Its totient is φ = 34138368.

The previous prime is 68449921. The next prime is 68449949. The reversal of 68449946 is 64994486.

It can be written as a sum of positive squares in 2 ways, for example, as 65691025 + 2758921 = 8105^2 + 1661^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 68449894 and 68449903.

It is not an unprimeable number, because it can be changed into a prime (68449949) 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, 42311 + ... + 43898.

Almost surely, 2^68449946 is an apocalyptic number.

68449946 is a deficient number, since it is larger than the sum of its proper divisors (34484794).

68449946 is a wasteful number, since it uses less digits than its factorization.

68449946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86608.

The product of its digits is 1492992, while the sum is 50.

The square root of 68449946 is about 8273.4482532980. The cubic root of 68449946 is about 409.0637888883.

The spelling of 68449946 in words is "sixty-eight million, four hundred forty-nine thousand, nine hundred forty-six".