1598669 has 2 divisors, whose sum is σ = 1598670. Its totient is φ = 1598668.

The previous prime is 1598651. The next prime is 1598677. The reversal of 1598669 is 9668951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 855625 + 743044 = 925^2 + 862^2 .

It is a cyclic number.

It is not a de Polignac number, because 1598669 - 2¹² = 1594573 is a prime.

It is a super-2 number, since 2×1598669² = 5111485143122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1598689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 799334 + 799335.

It is an arithmetic number, because the mean of its divisors is an integer number (799335).

2^1598669 is an apocalyptic number.

It is an amenable number.

1598669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1598669 is an equidigital number, since it uses as much as digits as its factorization.

1598669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 44.

The square root of 1598669 is about 1264.3848306588. The cubic root of 1598669 is about 116.9282683011.

The spelling of 1598669 in words is "one million, five hundred ninety-eight thousand, six hundred sixty-nine".