3654966 has 32 divisors (see below), whose sum is σ = 8847360. Its totient is φ = 982656.

The previous prime is 3654961. The next prime is 3654997. The reversal of 3654966 is 6694563.

3654966 = T₂₈ + T₂₉ + ... + T₂₇₉.

It is a happy number.

It is a super-2 number, since 2×3654966² = 26717552922312, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3654961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1846 + ... + 3273.

It is an arithmetic number, because the mean of its divisors is an integer number (276480).

Almost surely, 2^3654966 is an apocalyptic number.

3654966 is an abundant number, since it is smaller than the sum of its proper divisors (5192394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3654966 is a wasteful number, since it uses less digits than its factorization.

3654966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5148.

The product of its digits is 116640, while the sum is 39.

The square root of 3654966 is about 1911.7965372916. The cubic root of 3654966 is about 154.0379678128.

The spelling of 3654966 in words is "three million, six hundred fifty-four thousand, nine hundred sixty-six".