722894 has 4 divisors (see below), whose sum is σ = 1084344. Its totient is φ = 361446.

The previous prime is 722881. The next prime is 722899. The reversal of 722894 is 498227.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×722894³ = 1133300590643078952, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 722894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180722 + ... + 180725.

It is an arithmetic number, because the mean of its divisors is an integer number (271086).

2⁷²²⁸⁹⁴ is an apocalyptic number.

722894 is a deficient number, since it is larger than the sum of its proper divisors (361450).

722894 is a wasteful number, since it uses less digits than its factorization.

722894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361449.

The product of its digits is 8064, while the sum is 32.

The square root of 722894 is about 850.2317331175. The cubic root of 722894 is about 89.7480194471.

The spelling of 722894 in words is "seven hundred twenty-two thousand, eight hundred ninety-four".