1671955 has 8 divisors (see below), whose sum is σ = 2022912. Its totient is φ = 1326528.

The previous prime is 1671947. The next prime is 1671961. The reversal of 1671955 is 5591761.

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 1671955 - 2³ = 1671947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1671955.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682 + ... + 1951.

It is an arithmetic number, because the mean of its divisors is an integer number (252864).

2^1671955 is an apocalyptic number.

1671955 is a deficient number, since it is larger than the sum of its proper divisors (350957).

1671955 is a wasteful number, since it uses less digits than its factorization.

1671955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765.

The product of its digits is 9450, while the sum is 34.

The square root of 1671955 is about 1293.0409892962. The cubic root of 1671955 is about 118.6883780008.

The spelling of 1671955 in words is "one million, six hundred seventy-one thousand, nine hundred fifty-five".