1956667 has 2 divisors, whose sum is σ = 1956668. Its totient is φ = 1956666.

The previous prime is 1956653. The next prime is 1956719. The reversal of 1956667 is 7666591.

It is a weak prime.

It is an emirp because it is prime and its reverse (7666591) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1956667 is a prime.

1956667 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1956637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978333 + 978334.

It is an arithmetic number, because the mean of its divisors is an integer number (978334).

2^1956667 is an apocalyptic number.

1956667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1956667 is an equidigital number, since it uses as much as digits as its factorization.

1956667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 40.

The square root of 1956667 is about 1398.8091363728. The cubic root of 1956667 is about 125.0755170349.

The spelling of 1956667 in words is "one million, nine hundred fifty-six thousand, six hundred sixty-seven".