738664 has 8 divisors (see below), whose sum is σ = 1385010. Its totient is φ = 369328.

The previous prime is 738643. The next prime is 738677. The reversal of 738664 is 466837.

It can be written as a sum of positive squares in only one way, i.e., 736164 + 2500 = 858^2 + 50^2 .

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

It is an unprimeable number.

738664 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46159 + ... + 46174.

2⁷³⁸⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

738664 is a deficient number, since it is larger than the sum of its proper divisors (646346).

738664 is a wasteful number, since it uses less digits than its factorization.

738664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92339 (or 92335 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 738664 is about 859.4556416709. The cubic root of 738664 is about 90.3959509503.

The spelling of 738664 in words is "seven hundred thirty-eight thousand, six hundred sixty-four".