1681324 has 6 divisors (see below), whose sum is σ = 2942324. Its totient is φ = 840660.

The previous prime is 1681321. The next prime is 1681349. The reversal of 1681324 is 4231861.

It is not an unprimeable number, because it can be changed into a prime (1681321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210162 + ... + 210169.

2^1681324 is an apocalyptic number.

It is an amenable number.

1681324 is a deficient number, since it is larger than the sum of its proper divisors (1261000).

1681324 is a wasteful number, since it uses less digits than its factorization.

1681324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420335 (or 420333 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 1681324 is about 1296.6587831808. The cubic root of 1681324 is about 118.9096600322.

It can be divided in two parts, 1681 and 324, that multiplied together give a square (544644 = 738²).

The spelling of 1681324 in words is "one million, six hundred eighty-one thousand, three hundred twenty-four".