722498 has 8 divisors (see below), whose sum is σ = 1238592. Its totient is φ = 309636.

The previous prime is 722489. The next prime is 722509. The reversal of 722498 is 894227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

722498 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25790 + ... + 25817.

It is an arithmetic number, because the mean of its divisors is an integer number (154824).

2⁷²²⁴⁹⁸ is an apocalyptic number.

722498 is a deficient number, since it is larger than the sum of its proper divisors (516094).

722498 is a wasteful number, since it uses less digits than its factorization.

722498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51616.

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

The square root of 722498 is about 849.9988235286. The cubic root of 722498 is about 89.7316285206.

The spelling of 722498 in words is "seven hundred twenty-two thousand, four hundred ninety-eight".