1641172 has 24 divisors (see below), whose sum is σ = 3180296. Its totient is φ = 736128.

The previous prime is 1641161. The next prime is 1641217. The reversal of 1641172 is 2711461.

It can be written as a sum of positive squares in 4 ways, for example, as 38416 + 1602756 = 196^2 + 1266^2 .

It is a congruent number.

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, 1498 + ... + 2350.

2^1641172 is an apocalyptic number.

It is an amenable number.

1641172 is a deficient number, since it is larger than the sum of its proper divisors (1539124).

1641172 is a wasteful number, since it uses less digits than its factorization.

1641172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 905 counting only the distinct ones).

The product of its digits is 336, while the sum is 22.

The square root of 1641172 is about 1281.0823548859. The cubic root of 1641172 is about 117.9554557523.

The spelling of 1641172 in words is "one million, six hundred forty-one thousand, one hundred seventy-two".