1598722 has 4 divisors (see below), whose sum is σ = 2398086. Its totient is φ = 799360.

The previous prime is 1598711. The next prime is 1598743. The reversal of 1598722 is 2278951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2278951 = 701 ⋅3251.

It can be written as a sum of positive squares in only one way, i.e., 1297321 + 301401 = 1139^2 + 549^2 .

It is an unprimeable 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 as a sum of consecutive naturals, namely, 399679 + ... + 399682.

2^1598722 is an apocalyptic number.

1598722 is a deficient number, since it is larger than the sum of its proper divisors (799364).

1598722 is an equidigital number, since it uses as much as digits as its factorization.

1598722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799363.

The product of its digits is 10080, while the sum is 34.

The square root of 1598722 is about 1264.4057892939. The cubic root of 1598722 is about 116.9295604447.

The spelling of 1598722 in words is "one million, five hundred ninety-eight thousand, seven hundred twenty-two".