1662456 has 32 divisors (see below), whose sum is σ = 4199760. Its totient is φ = 548352.

The previous prime is 1662449. The next prime is 1662457. The reversal of 1662456 is 6542661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662457) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2406 + ... + 3018.

2^1662456 is an apocalyptic number.

It is an amenable number.

1662456 is an abundant number, since it is smaller than the sum of its proper divisors (2537304).

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

1662456 is a wasteful number, since it uses less digits than its factorization.

1662456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735 (or 731 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 1662456 is about 1289.3626332417. The cubic root of 1662456 is about 118.4631800007.

The spelling of 1662456 in words is "one million, six hundred sixty-two thousand, four hundred fifty-six".