722434 has 4 divisors (see below), whose sum is σ = 1083654. Its totient is φ = 361216.

The previous prime is 722431. The next prime is 722459. The reversal of 722434 is 434227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434227 = 67 ⋅6481.

It can be written as a sum of positive squares in only one way, i.e., 366025 + 356409 = 605^2 + 597^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 7 + 2⁹ + 4⁶ + 2¹⁹ + 3¹¹ + 4⁷ .

It is not an unprimeable number, because it can be changed into a prime (722431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180607 + ... + 180610.

2⁷²²⁴³⁴ is an apocalyptic number.

722434 is a deficient number, since it is larger than the sum of its proper divisors (361220).

722434 is a wasteful number, since it uses less digits than its factorization.

722434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361219.

The product of its digits is 1344, while the sum is 22.

The square root of 722434 is about 849.9611755839. The cubic root of 722434 is about 89.7289789198.

It can be divided in two parts, 722 and 434, that added together give a square (1156 = 34²).

The spelling of 722434 in words is "seven hundred twenty-two thousand, four hundred thirty-four".