1956646 has 4 divisors (see below), whose sum is σ = 2934972. Its totient is φ = 978322.

The previous prime is 1956637. The next prime is 1956653. The reversal of 1956646 is 6466591.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489160 + ... + 489163.

It is an arithmetic number, because the mean of its divisors is an integer number (733743).

2^1956646 is an apocalyptic number.

1956646 is a deficient number, since it is larger than the sum of its proper divisors (978326).

1956646 is an equidigital number, since it uses as much as digits as its factorization.

1956646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978325.

The product of its digits is 38880, while the sum is 37.

The square root of 1956646 is about 1398.8016299676. The cubic root of 1956646 is about 125.0750695741.

It can be divided in two parts, 19 and 56646, that added together give a palindrome (56665).

The spelling of 1956646 in words is "one million, nine hundred fifty-six thousand, six hundred forty-six".