738721684 has 6 divisors (see below), whose sum is σ = 1292762954. Its totient is φ = 369360840.

The previous prime is 738721679. The next prime is 738721693. The reversal of 738721684 is 486127837.

It can be written as a sum of positive squares in only one way, i.e., 690112900 + 48608784 = 26270^2 + 6972^2 .

It is a super-3 number, since 3×738721684³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92340207 + ... + 92340214.

Almost surely, 2^738721684 is an apocalyptic number.

It is an amenable number.

738721684 is a deficient number, since it is larger than the sum of its proper divisors (554041270).

738721684 is a wasteful number, since it uses less digits than its factorization.

738721684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184680425 (or 184680423 counting only the distinct ones).

The product of its digits is 451584, while the sum is 46.

The square root of 738721684 is about 27179.4349462972. The cubic root of 738721684 is about 903.9830396614.

The spelling of 738721684 in words is "seven hundred thirty-eight million, seven hundred twenty-one thousand, six hundred eighty-four".