719668 has 6 divisors (see below), whose sum is σ = 1259426. Its totient is φ = 359832.

The previous prime is 719659. The next prime is 719671. The reversal of 719668 is 866917.

It can be written as a sum of positive squares in only one way, i.e., 702244 + 17424 = 838^2 + 132^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 89955 + ... + 89962.

2⁷¹⁹⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

719668 is a deficient number, since it is larger than the sum of its proper divisors (539758).

719668 is a wasteful number, since it uses less digits than its factorization.

719668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179921 (or 179919 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 719668 is about 848.3324819904. The cubic root of 719668 is about 89.6143166430.

The spelling of 719668 in words is "seven hundred nineteen thousand, six hundred sixty-eight".