3656967 has 4 divisors (see below), whose sum is σ = 4875960. Its totient is φ = 2437976.

The previous prime is 3656953. The next prime is 3656981. The reversal of 3656967 is 7696563.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3656953) and next prime (3656981).

It is a cyclic number.

It is not a de Polignac number, because 3656967 - 2⁶ = 3656903 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3656267) 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, 609492 + ... + 609497.

It is an arithmetic number, because the mean of its divisors is an integer number (1218990).

Almost surely, 2^3656967 is an apocalyptic number.

3656967 is a deficient number, since it is larger than the sum of its proper divisors (1218993).

3656967 is a wasteful number, since it uses less digits than its factorization.

3656967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218992.

The product of its digits is 204120, while the sum is 42.

The square root of 3656967 is about 1912.3197954317. The cubic root of 3656967 is about 154.0660732946.

The spelling of 3656967 in words is "three million, six hundred fifty-six thousand, nine hundred sixty-seven".