3956651 has 2 divisors, whose sum is σ = 3956652. Its totient is φ = 3956650.

The previous prime is 3956647. The next prime is 3956663. The reversal of 3956651 is 1566593.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3956651 - 2² = 3956647 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3956671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1978325 + 1978326.

It is an arithmetic number, because the mean of its divisors is an integer number (1978326).

Almost surely, 2^3956651 is an apocalyptic number.

3956651 is a deficient number, since it is larger than the sum of its proper divisors (1).

3956651 is an equidigital number, since it uses as much as digits as its factorization.

3956651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24300, while the sum is 35.

The square root of 3956651 is about 1989.1332283183. The cubic root of 3956651 is about 158.1645857449.

The spelling of 3956651 in words is "three million, nine hundred fifty-six thousand, six hundred fifty-one".