68449872 has 40 divisors (see below), whose sum is σ = 177872544. Its totient is φ = 22681984.

The previous prime is 68449867. The next prime is 68449879. The reversal of 68449872 is 27894486.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68449879) 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, 4183 + ... + 12425.

Almost surely, 2^68449872 is an apocalyptic number.

It is an amenable number.

68449872 is an abundant number, since it is smaller than the sum of its proper divisors (109422672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68449872 is a wasteful number, since it uses less digits than its factorization.

68449872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8427 (or 8421 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 68449872 is about 8273.4437811591. The cubic root of 68449872 is about 409.0636414777.

The spelling of 68449872 in words is "sixty-eight million, four hundred forty-nine thousand, eight hundred seventy-two".