3566664 has 24 divisors (see below), whose sum is σ = 9659910. Its totient is φ = 1188864.

The previous prime is 3566659. The next prime is 3566669. The reversal of 3566664 is 4666653.

It is an interprime number because it is at equal distance from previous prime (3566659) and next prime (3566669).

It can be written as a sum of positive squares in only one way, i.e., 3090564 + 476100 = 1758^2 + 690^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3566669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24697 + ... + 24840.

Almost surely, 2^3566664 is an apocalyptic number.

It is an amenable number.

3566664 is an abundant number, since it is smaller than the sum of its proper divisors (6093246).

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

3566664 is a wasteful number, since it uses less digits than its factorization.

3566664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49549 (or 49542 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 3566664 is about 1888.5613572241. The cubic root of 3566664 is about 152.7873503595.

The spelling of 3566664 in words is "three million, five hundred sixty-six thousand, six hundred sixty-four".