1679645 has 8 divisors (see below), whose sum is σ = 2198880. Its totient is φ = 1221520.

The previous prime is 1679641. The next prime is 1679653. The reversal of 1679645 is 5469761.

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

It is not a de Polignac number, because 1679645 - 2² = 1679641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1679599 and 1679608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1679641) 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, 15215 + ... + 15324.

It is an arithmetic number, because the mean of its divisors is an integer number (274860).

2^1679645 is an apocalyptic number.

It is an amenable number.

1679645 is a deficient number, since it is larger than the sum of its proper divisors (519235).

1679645 is a wasteful number, since it uses less digits than its factorization.

1679645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30555.

The product of its digits is 45360, while the sum is 38.

The square root of 1679645 is about 1296.0111882233. The cubic root of 1679645 is about 118.8700650833.

The spelling of 1679645 in words is "one million, six hundred seventy-nine thousand, six hundred forty-five".