3646556 has 12 divisors (see below), whose sum is σ = 6717480. Its totient is φ = 1727280.

The previous prime is 3646553. The next prime is 3646567. The reversal of 3646556 is 6556463.

3646556 = T₂₇₁ + T₂₇₂ + ... + T₃₄₆.

It is a super-2 number, since 2×3646556² = 26594741322272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23915 + ... + 24066.

It is an arithmetic number, because the mean of its divisors is an integer number (559790).

Almost surely, 2^3646556 is an apocalyptic number.

It is an amenable number.

3646556 is a deficient number, since it is larger than the sum of its proper divisors (3070924).

3646556 is a wasteful number, since it uses less digits than its factorization.

3646556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48004 (or 48002 counting only the distinct ones).

The product of its digits is 64800, while the sum is 35.

The square root of 3646556 is about 1909.5957687427. The cubic root of 3646556 is about 153.9197310367.

The spelling of 3646556 in words is "three million, six hundred forty-six thousand, five hundred fifty-six".