1963667 has 2 divisors, whose sum is σ = 1963668. Its totient is φ = 1963666.

The previous prime is 1963657. The next prime is 1963679. The reversal of 1963667 is 7663691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1963667 - 2⁸ = 1963411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1963667.

It is not a weakly prime, because it can be changed into another prime (1963657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981833 + 981834.

It is an arithmetic number, because the mean of its divisors is an integer number (981834).

2^1963667 is an apocalyptic number.

1963667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1963667 is an equidigital number, since it uses as much as digits as its factorization.

1963667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 38.

The square root of 1963667 is about 1401.3090308708. The cubic root of 1963667 is about 125.2244925833.

The spelling of 1963667 in words is "one million, nine hundred sixty-three thousand, six hundred sixty-seven".