1790797 has 4 divisors (see below), whose sum is σ = 1896156. Its totient is φ = 1685440.

The previous prime is 1790791. The next prime is 1790809. The reversal of 1790797 is 7970971.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7970971 = 1087 ⋅7333.

It can be written as a sum of positive squares in 2 ways, for example, as 477481 + 1313316 = 691^2 + 1146^2 .

It is a cyclic number.

It is not a de Polignac number, because 1790797 - 2⁷ = 1790669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1790791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52654 + ... + 52687.

It is an arithmetic number, because the mean of its divisors is an integer number (474039).

2^1790797 is an apocalyptic number.

1790797 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1790797 is a deficient number, since it is larger than the sum of its proper divisors (105359).

1790797 is a wasteful number, since it uses less digits than its factorization.

1790797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105358.

The product of its (nonzero) digits is 27783, while the sum is 40.

The square root of 1790797 is about 1338.2066357630. The cubic root of 1790797 is about 121.4363726080.

The spelling of 1790797 in words is "one million, seven hundred ninety thousand, seven hundred ninety-seven".