3765667 has 4 divisors (see below), whose sum is σ = 3963880. Its totient is φ = 3567456.

The previous prime is 3765661. The next prime is 3765673. The reversal of 3765667 is 7665673.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7665673 = 397 ⋅19309.

It is an interprime number because it is at equal distance from previous prime (3765661) and next prime (3765673).

It is a cyclic number.

It is not a de Polignac number, because 3765667 - 2¹⁵ = 3732899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3765661) 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 3 ways as a sum of consecutive naturals, for example, 99078 + ... + 99115.

It is an arithmetic number, because the mean of its divisors is an integer number (990970).

Almost surely, 2^3765667 is an apocalyptic number.

3765667 is a deficient number, since it is larger than the sum of its proper divisors (198213).

3765667 is a wasteful number, since it uses less digits than its factorization.

3765667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198212.

The product of its digits is 158760, while the sum is 40.

The square root of 3765667 is about 1940.5326588337. The cubic root of 3765667 is about 155.5776847392.

The spelling of 3765667 in words is "three million, seven hundred sixty-five thousand, six hundred sixty-seven".