1779361 has 2 divisors, whose sum is σ = 1779362. Its totient is φ = 1779360.

The previous prime is 1779347. The next prime is 1779403. The reversal of 1779361 is 1639771.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1115136 + 664225 = 1056^2 + 815^2 .

It is a cyclic number.

It is not a de Polignac number, because 1779361 - 2⁵ = 1779329 is a prime.

It is a super-2 number, since 2×1779361² = 6332251136642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1779301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 889680 + 889681.

It is an arithmetic number, because the mean of its divisors is an integer number (889681).

2^1779361 is an apocalyptic number.

It is an amenable number.

1779361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1779361 is an equidigital number, since it uses as much as digits as its factorization.

1779361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938, while the sum is 34.

The square root of 1779361 is about 1333.9269095419. The cubic root of 1779361 is about 121.1773235068.

The spelling of 1779361 in words is "one million, seven hundred seventy-nine thousand, three hundred sixty-one".