3967620626 has 8 divisors (see below), whose sum is σ = 5955421644. Its totient is φ = 1982480080.

The previous prime is 3967620563. The next prime is 3967620637. The reversal of 3967620626 is 6260267693.

It is a happy number.

3967620626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2937531601 + 1030089025 = 54199^2 + 32095^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661385 + ... + 667356.

Almost surely, 2^3967620626 is an apocalyptic number.

3967620626 is a deficient number, since it is larger than the sum of its proper divisors (1987801018).

3967620626 is a wasteful number, since it uses less digits than its factorization.

3967620626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330236.

The product of its (nonzero) digits is 979776, while the sum is 47.

The square root of 3967620626 is about 62989.0516359788. The cubic root of 3967620626 is about 1583.1061879237.

The spelling of 3967620626 in words is "three billion, nine hundred sixty-seven million, six hundred twenty thousand, six hundred twenty-six".