1646536 has 8 divisors (see below), whose sum is σ = 3087270. Its totient is φ = 823264.

The previous prime is 1646527. The next prime is 1646543. The reversal of 1646536 is 6356461.

It can be written as a sum of positive squares in only one way, i.e., 1425636 + 220900 = 1194^2 + 470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1646536² = 5422161598592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1646498 and 1646507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102901 + ... + 102916.

2^1646536 is an apocalyptic number.

It is an amenable number.

1646536 is a deficient number, since it is larger than the sum of its proper divisors (1440734).

1646536 is a wasteful number, since it uses less digits than its factorization.

1646536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205823 (or 205819 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 1646536 is about 1283.1741892666. The cubic root of 1646536 is about 118.0838243805.

The spelling of 1646536 in words is "one million, six hundred forty-six thousand, five hundred thirty-six".