1673997 has 8 divisors (see below), whose sum is σ = 2403744. Its totient is φ = 1030128.

The previous prime is 1673993. The next prime is 1674011. The reversal of 1673997 is 7993761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1673997 - 2² = 1673993 is a prime.

1673997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1673993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21423 + ... + 21500.

It is an arithmetic number, because the mean of its divisors is an integer number (300468).

2^1673997 is an apocalyptic number.

It is an amenable number.

1673997 is a deficient number, since it is larger than the sum of its proper divisors (729747).

1673997 is a wasteful number, since it uses less digits than its factorization.

1673997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42939.

The product of its digits is 71442, while the sum is 42.

The square root of 1673997 is about 1293.8303598231. The cubic root of 1673997 is about 118.7366773604.

It can be divided in two parts, 16739 and 97, that added together give a triangular number (16836 = T₁₈₃).

The spelling of 1673997 in words is "one million, six hundred seventy-three thousand, nine hundred ninety-seven".