722698 has 4 divisors (see below), whose sum is σ = 1084050. Its totient is φ = 361348.

The previous prime is 722669. The next prime is 722713. The reversal of 722698 is 896227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 896227 = 691 ⋅1297.

It can be written as a sum of positive squares in only one way, i.e., 677329 + 45369 = 823^2 + 213^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180673 + ... + 180676.

2⁷²²⁶⁹⁸ is an apocalyptic number.

722698 is a deficient number, since it is larger than the sum of its proper divisors (361352).

722698 is a wasteful number, since it uses less digits than its factorization.

722698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361351.

The product of its digits is 12096, while the sum is 34.

The square root of 722698 is about 850.1164626097. The cubic root of 722698 is about 89.7399075147.

The spelling of 722698 in words is "seven hundred twenty-two thousand, six hundred ninety-eight".