1677641 has 8 divisors (see below), whose sum is σ = 1925184. Its totient is φ = 1432080.

The previous prime is 1677631. The next prime is 1677667. The reversal of 1677641 is 1467761.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1677641 - 2¹⁸ = 1415497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1677598 and 1677607.

It is not an unprimeable number, because it can be changed into a prime (1677631) 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, 2831 + ... + 3371.

It is an arithmetic number, because the mean of its divisors is an integer number (240648).

2^1677641 is an apocalyptic number.

It is an amenable number.

1677641 is a deficient number, since it is larger than the sum of its proper divisors (247543).

1677641 is an equidigital number, since it uses as much as digits as its factorization.

1677641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991.

The product of its digits is 7056, while the sum is 32.

The square root of 1677641 is about 1295.2378160014. The cubic root of 1677641 is about 118.8227712777.

The spelling of 1677641 in words is "one million, six hundred seventy-seven thousand, six hundred forty-one".