1797993 has 6 divisors (see below), whose sum is σ = 2597114. Its totient is φ = 1198656.

The previous prime is 1797967. The next prime is 1798001. The reversal of 1797993 is 3997971.

It can be written as a sum of positive squares in only one way, i.e., 1734489 + 63504 = 1317^2 + 252^2 .

It is not a de Polignac number, because 1797993 - 2¹⁴ = 1781609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1797953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99880 + ... + 99897.

2^1797993 is an apocalyptic number.

It is an amenable number.

1797993 is a deficient number, since it is larger than the sum of its proper divisors (799121).

1797993 is a wasteful number, since it uses less digits than its factorization.

1797993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199783 (or 199780 counting only the distinct ones).

The product of its digits is 107163, while the sum is 45.

The square root of 1797993 is about 1340.8926131499. The cubic root of 1797993 is about 121.5988120628.

The spelling of 1797993 in words is "one million, seven hundred ninety-seven thousand, nine hundred ninety-three".