3745666 has 8 divisors (see below), whose sum is σ = 5634684. Its totient is φ = 1867440.

The previous prime is 3745663. The next prime is 3745691. The reversal of 3745666 is 6665473.

It can be written as a sum of positive squares in 2 ways, for example, as 3500641 + 245025 = 1871^2 + 495^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (3745663) 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, 1765 + ... + 3256.

Almost surely, 2^3745666 is an apocalyptic number.

3745666 is the 1035-th centered heptagonal number.

3745666 is a deficient number, since it is larger than the sum of its proper divisors (1889018).

3745666 is a wasteful number, since it uses less digits than its factorization.

3745666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5396.

The product of its digits is 90720, while the sum is 37.

The square root of 3745666 is about 1935.3723156023. The cubic root of 3745666 is about 155.3017500221.

The spelling of 3745666 in words is "three million, seven hundred forty-five thousand, six hundred sixty-six".