1646164 has 12 divisors (see below), whose sum is σ = 3102484. Its totient is φ = 759744.

The previous prime is 1646153. The next prime is 1646171. The reversal of 1646164 is 4616461.

It can be written as a sum of positive squares in 2 ways, for example, as 501264 + 1144900 = 708^2 + 1070^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent 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, 15777 + ... + 15880.

2^1646164 is an apocalyptic number.

It is an amenable number.

1646164 is a deficient number, since it is larger than the sum of its proper divisors (1456320).

1646164 is a wasteful number, since it uses less digits than its factorization.

1646164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31674 (or 31672 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 1646164 is about 1283.0292280381. The cubic root of 1646164 is about 118.0749308627.

It can be divided in two parts, 164 and 6164, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 1646164 in words is "one million, six hundred forty-six thousand, one hundred sixty-four".