3646531 has 6 divisors (see below), whose sum is σ = 4241940. Its totient is φ = 3125556.

The previous prime is 3646523. The next prime is 3646541. The reversal of 3646531 is 1356463.

3646531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3646531 - 2³ = 3646523 is a prime.

It is a super-2 number, since 2×3646531² = 26594376667922, which contains 22 as substring.

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 3646531.

It is not an unprimeable number, because it can be changed into a prime (3646541) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 37161 + ... + 37258.

It is an arithmetic number, because the mean of its divisors is an integer number (706990).

Almost surely, 2^3646531 is an apocalyptic number.

3646531 is a deficient number, since it is larger than the sum of its proper divisors (595409).

3646531 is an equidigital number, since it uses as much as digits as its factorization.

3646531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74433 (or 74426 counting only the distinct ones).

The product of its digits is 6480, while the sum is 28.

The square root of 3646531 is about 1909.5892228435. The cubic root of 3646531 is about 153.9193792891.

The spelling of 3646531 in words is "three million, six hundred forty-six thousand, five hundred thirty-one".