3667651 has 4 divisors (see below), whose sum is σ = 3949792. Its totient is φ = 3385512.

The previous prime is 3667637. The next prime is 3667669. The reversal of 3667651 is 1567663.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1567663 = 811 ⋅1933.

It is a de Polignac number, because none of the positive numbers 2^k-3667651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3667621) 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, 141051 + ... + 141076.

It is an arithmetic number, because the mean of its divisors is an integer number (987448).

Almost surely, 2^3667651 is an apocalyptic number.

3667651 is a deficient number, since it is larger than the sum of its proper divisors (282141).

3667651 is a wasteful number, since it uses less digits than its factorization.

3667651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282140.

The product of its digits is 22680, while the sum is 34.

The square root of 3667651 is about 1915.1112239241. Note that the first 3 decimals coincide. The cubic root of 3667651 is about 154.2159644957.

The spelling of 3667651 in words is "three million, six hundred sixty-seven thousand, six hundred fifty-one".