1672739 has 6 divisors (see below), whose sum is σ = 1700556. Its totient is φ = 1645280.

The previous prime is 1672663. The next prime is 1672747. The reversal of 1672739 is 9372761.

It is not a de Polignac number, because 1672739 - 2²⁰ = 624163 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1672699 and 1672708.

It is not an unprimeable number, because it can be changed into a prime (1672799) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12704 + ... + 12834.

It is an arithmetic number, because the mean of its divisors is an integer number (283426).

2^1672739 is an apocalyptic number.

1672739 is a deficient number, since it is larger than the sum of its proper divisors (27817).

1672739 is an equidigital number, since it uses as much as digits as its factorization.

1672739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 244 counting only the distinct ones).

The product of its digits is 15876, while the sum is 35.

The square root of 1672739 is about 1293.3441150753. The cubic root of 1672739 is about 118.7069265757.

The spelling of 1672739 in words is "one million, six hundred seventy-two thousand, seven hundred thirty-nine".