1673731 has 2 divisors, whose sum is σ = 1673732. Its totient is φ = 1673730.

The previous prime is 1673723. The next prime is 1673741. The reversal of 1673731 is 1373761.

It is a weak prime.

It is an emirp because it is prime and its reverse (1373761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1673731 - 2³ = 1673723 is a prime.

It is a super-2 number, since 2×1673731² = 5602750920722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1673731.

It is not a weakly prime, because it can be changed into another prime (1673741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836865 + 836866.

It is an arithmetic number, because the mean of its divisors is an integer number (836866).

2^1673731 is an apocalyptic number.

1673731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1673731 is an equidigital number, since it uses as much as digits as its factorization.

1673731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2646, while the sum is 28.

The square root of 1673731 is about 1293.7275601919. The cubic root of 1673731 is about 118.7303878969.

The spelling of 1673731 in words is "one million, six hundred seventy-three thousand, seven hundred thirty-one".