1366667444 has 12 divisors (see below), whose sum is σ = 2395875300. Its totient is φ = 682131648.

The previous prime is 1366667437. The next prime is 1366667507. The reversal of 1366667444 is 4447666631.

It can be written as a sum of positive squares in 2 ways, for example, as 814417444 + 552250000 = 28538^2 + 23500^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297959 + ... + 302510.

It is an arithmetic number, because the mean of its divisors is an integer number (199656275).

Almost surely, 2^1366667444 is an apocalyptic number.

It is an amenable number.

1366667444 is a deficient number, since it is larger than the sum of its proper divisors (1029207856).

1366667444 is a wasteful number, since it uses less digits than its factorization.

1366667444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601042 (or 601040 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 47.

The square root of 1366667444 is about 36968.4655348312. The cubic root of 1366667444 is about 1109.7392575338.

The spelling of 1366667444 in words is "one billion, three hundred sixty-six million, six hundred sixty-seven thousand, four hundred forty-four".