1966904 has 8 divisors (see below), whose sum is σ = 3687960. Its totient is φ = 983448.

The previous prime is 1966901. The next prime is 1966907. The reversal of 1966904 is 4096691.

It is an interprime number because it is at equal distance from previous prime (1966901) and next prime (1966907).

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1966904² = 7737422690432, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122924 + ... + 122939.

It is an arithmetic number, because the mean of its divisors is an integer number (460995).

2^1966904 is an apocalyptic number.

It is an amenable number.

1966904 is a deficient number, since it is larger than the sum of its proper divisors (1721056).

1966904 is a wasteful number, since it uses less digits than its factorization.

1966904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245869 (or 245865 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 1966904 is about 1402.4635467633. The cubic root of 1966904 is about 125.2932634344.

The spelling of 1966904 in words is "one million, nine hundred sixty-six thousand, nine hundred four".