1676321 has 2 divisors, whose sum is σ = 1676322. Its totient is φ = 1676320.

The previous prime is 1676303. The next prime is 1676333. The reversal of 1676321 is 1236761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 846400 + 829921 = 920^2 + 911^2 .

It is an emirp because it is prime and its reverse (1236761) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1676321 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (1676221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 838160 + 838161.

It is an arithmetic number, because the mean of its divisors is an integer number (838161).

2^1676321 is an apocalyptic number.

It is an amenable number.

1676321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1676321 is an equidigital number, since it uses as much as digits as its factorization.

1676321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 1676321 is about 1294.7281567959. The cubic root of 1676321 is about 118.7915990915.

The spelling of 1676321 in words is "one million, six hundred seventy-six thousand, three hundred twenty-one".