19706964 has 12 divisors (see below), whose sum is σ = 45982944. Its totient is φ = 6568984.

The previous prime is 19706963. The next prime is 19706989. The reversal of 19706964 is 46960791.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19706963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821112 + ... + 821135.

It is an arithmetic number, because the mean of its divisors is an integer number (3831912).

Almost surely, 2^19706964 is an apocalyptic number.

It is an amenable number.

19706964 is an abundant number, since it is smaller than the sum of its proper divisors (26275980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19706964 is a wasteful number, since it uses less digits than its factorization.

19706964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642254 (or 1642252 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 19706964 is about 4439.2526398032. The cubic root of 19706964 is about 270.1095303210.

The spelling of 19706964 in words is "nineteen million, seven hundred six thousand, nine hundred sixty-four".