1679745 has 16 divisors (see below), whose sum is σ = 2714112. Its totient is φ = 887040.

The previous prime is 1679723. The next prime is 1679773. The reversal of 1679745 is 5479761.

It is not a de Polignac number, because 1679745 - 2⁶ = 1679681 is a prime.

It is a d-powerful number, because it can be written as 1 + 6⁸ + 7² + 9 + 7² + 4² + 5 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1200 + ... + 2190.

It is an arithmetic number, because the mean of its divisors is an integer number (169632).

2^1679745 is an apocalyptic number.

1679745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1679745 is a deficient number, since it is larger than the sum of its proper divisors (1034367).

1679745 is a wasteful number, since it uses less digits than its factorization.

1679745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112.

The product of its digits is 52920, while the sum is 39.

The square root of 1679745 is about 1296.0497675630. The cubic root of 1679745 is about 118.8724240680.

The spelling of 1679745 in words is "one million, six hundred seventy-nine thousand, seven hundred forty-five".