1689000172 has 12 divisors (see below), whose sum is σ = 2960281296. Its totient is φ = 843205520.

The previous prime is 1689000163. The next prime is 1689000221. The reversal of 1689000172 is 2710009861.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320704 + ... + 325927.

It is an arithmetic number, because the mean of its divisors is an integer number (246690108).

Almost surely, 2^1689000172 is an apocalyptic number.

It is an amenable number.

1689000172 is a deficient number, since it is larger than the sum of its proper divisors (1271281124).

1689000172 is a wasteful number, since it uses less digits than its factorization.

1689000172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647288 (or 647286 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 1689000172 is about 41097.4472686565. The cubic root of 1689000172 is about 1190.9034807222.

The spelling of 1689000172 in words is "one billion, six hundred eighty-nine million, one hundred seventy-two", and thus it is an aban number.