1964623 has 2 divisors, whose sum is σ = 1964624. Its totient is φ = 1964622.

The previous prime is 1964617. The next prime is 1964629. The reversal of 1964623 is 3264691.

It is a balanced prime because it is at equal distance from previous prime (1964617) and next prime (1964629).

It is an emirp because it is prime and its reverse (3264691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1964623 - 2¹³ = 1956431 is a prime.

It is a d-powerful number, because it can be written as 1 + 9³ + 6⁷ + 4⁶ + 6⁸ + 2 + 3⁵ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1964629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982311 + 982312.

It is an arithmetic number, because the mean of its divisors is an integer number (982312).

2^1964623 is an apocalyptic number.

1964623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964623 is an equidigital number, since it uses as much as digits as its factorization.

1964623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 1964623 is about 1401.6500989905. The cubic root of 1964623 is about 125.2448108947.

The spelling of 1964623 in words is "one million, nine hundred sixty-four thousand, six hundred twenty-three".