1965247 has 2 divisors, whose sum is σ = 1965248. Its totient is φ = 1965246.

The previous prime is 1965239. The next prime is 1965259. The reversal of 1965247 is 7425691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1965247 - 2³ = 1965239 is a prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1965277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982623 + 982624.

It is an arithmetic number, because the mean of its divisors is an integer number (982624).

2^1965247 is an apocalyptic number.

1965247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1965247 is an equidigital number, since it uses as much as digits as its factorization.

1965247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 1965247 is about 1401.8726761015. The cubic root of 1965247 is about 125.2580695011.

The spelling of 1965247 in words is "one million, nine hundred sixty-five thousand, two hundred forty-seven".