744664 has 8 divisors (see below), whose sum is σ = 1396260. Its totient is φ = 372328.

The previous prime is 744661. The next prime is 744677. The reversal of 744664 is 466447.

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46534 + ... + 46549.

2⁷⁴⁴⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

744664 is a deficient number, since it is larger than the sum of its proper divisors (651596).

744664 is a wasteful number, since it uses less digits than its factorization.

744664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93089 (or 93085 counting only the distinct ones).

The product of its digits is 16128, while the sum is 31.

The square root of 744664 is about 862.9391635567. The cubic root of 744664 is about 90.6400464910.

The spelling of 744664 in words is "seven hundred forty-four thousand, six hundred sixty-four".