701728 has 12 divisors (see below), whose sum is σ = 1381590. Its totient is φ = 350848.

The previous prime is 701719. The next prime is 701731. The reversal of 701728 is 827107.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 374544 + 327184 = 612^2 + 572^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

701728 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, 10933 + ... + 10996.

2⁷⁰¹⁷²⁸ is an apocalyptic number.

It is an amenable number.

701728 is a deficient number, since it is larger than the sum of its proper divisors (679862).

701728 is a wasteful number, since it uses less digits than its factorization.

701728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21939 (or 21931 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 701728 is about 837.6920675284. The cubic root of 701728 is about 88.8634019521.

The spelling of 701728 in words is "seven hundred one thousand, seven hundred twenty-eight".