1598649 has 16 divisors (see below), whose sum is σ = 2318400. Its totient is φ = 974016.

The previous prime is 1598633. The next prime is 1598651. The reversal of 1598649 is 9468951.

It is not a de Polignac number, because 1598649 - 2⁴ = 1598633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1598649.

It is not an unprimeable number, because it can be changed into a prime (1598669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6867 + ... + 7095.

It is an arithmetic number, because the mean of its divisors is an integer number (144900).

2^1598649 is an apocalyptic number.

It is an amenable number.

1598649 is a deficient number, since it is larger than the sum of its proper divisors (719751).

1598649 is a wasteful number, since it uses less digits than its factorization.

1598649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424.

The product of its digits is 77760, while the sum is 42.

The square root of 1598649 is about 1264.3769216496. The cubic root of 1598649 is about 116.9277806923.

The spelling of 1598649 in words is "one million, five hundred ninety-eight thousand, six hundred forty-nine".