1673961 has 4 divisors (see below), whose sum is σ = 2231952. Its totient is φ = 1115972.

The previous prime is 1673953. The next prime is 1673981. The reversal of 1673961 is 1693761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1673961 - 2³ = 1673953 is a prime.

It is a D-number.

1673961 is a lucky number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1673941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278991 + ... + 278996.

It is an arithmetic number, because the mean of its divisors is an integer number (557988).

2^1673961 is an apocalyptic number.

It is an amenable number.

1673961 is a deficient number, since it is larger than the sum of its proper divisors (557991).

1673961 is an equidigital number, since it uses as much as digits as its factorization.

1673961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557990.

The product of its digits is 6804, while the sum is 33.

The square root of 1673961 is about 1293.8164475690. The cubic root of 1673961 is about 118.7358261938.

The spelling of 1673961 in words is "one million, six hundred seventy-three thousand, nine hundred sixty-one".