747668 has 6 divisors (see below), whose sum is σ = 1308426. Its totient is φ = 373832.

The previous prime is 747647. The next prime is 747673. The reversal of 747668 is 866747.

It can be written as a sum of positive squares in only one way, i.e., 743044 + 4624 = 862^2 + 68^2 .

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

747668 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, 93455 + ... + 93462.

It is an arithmetic number, because the mean of its divisors is an integer number (218071).

2⁷⁴⁷⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

747668 is a deficient number, since it is larger than the sum of its proper divisors (560758).

747668 is a wasteful number, since it uses less digits than its factorization.

747668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186921 (or 186919 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 747668 is about 864.6779747397. The cubic root of 747668 is about 90.7617646464.

The spelling of 747668 in words is "seven hundred forty-seven thousand, six hundred sixty-eight".