1964987 has 2 divisors, whose sum is σ = 1964988. Its totient is φ = 1964986.

The previous prime is 1964983. The next prime is 1965077. The reversal of 1964987 is 7894691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1964987 - 2² = 1964983 is a prime.

It is a super-2 number, since 2×1964987² = 7722347820338, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1964981) 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, 982493 + 982494.

It is an arithmetic number, because the mean of its divisors is an integer number (982494).

2^1964987 is an apocalyptic number.

1964987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964987 is an equidigital number, since it uses as much as digits as its factorization.

1964987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The square root of 1964987 is about 1401.7799399335. The cubic root of 1964987 is about 125.2525454229.

The spelling of 1964987 in words is "one million, nine hundred sixty-four thousand, nine hundred eighty-seven".