67748444 has 6 divisors (see below), whose sum is σ = 118559784. Its totient is φ = 33874220.

The previous prime is 67748431. The next prime is 67748449. The reversal of 67748444 is 44484776.

It is a happy number.

It is a super-2 number, since 2×67748444² = 9179703328842272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67748395 and 67748404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67748449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8468552 + ... + 8468559.

It is an arithmetic number, because the mean of its divisors is an integer number (19759964).

Almost surely, 2^67748444 is an apocalyptic number.

It is an amenable number.

67748444 is a deficient number, since it is larger than the sum of its proper divisors (50811340).

67748444 is a wasteful number, since it uses less digits than its factorization.

67748444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16937115 (or 16937113 counting only the distinct ones).

The product of its digits is 602112, while the sum is 44.

The square root of 67748444 is about 8230.9442957658. The cubic root of 67748444 is about 407.6615721715.

The spelling of 67748444 in words is "sixty-seven million, seven hundred forty-eight thousand, four hundred forty-four".