382620661 has 2 divisors, whose sum is σ = 382620662. Its totient is φ = 382620660.

The previous prime is 382620659. The next prime is 382620691. The reversal of 382620661 is 166026283.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 330694225 + 51926436 = 18185^2 + 7206^2 .

It is a cyclic number.

It is not a de Polignac number, because 382620661 - 2¹ = 382620659 is a prime.

Together with 382620659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (382620611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191310330 + 191310331.

It is an arithmetic number, because the mean of its divisors is an integer number (191310331).

Almost surely, 2^382620661 is an apocalyptic number.

It is an amenable number.

382620661 is a deficient number, since it is larger than the sum of its proper divisors (1).

382620661 is an equidigital number, since it uses as much as digits as its factorization.

382620661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 382620661 is about 19560.6917311224. The cubic root of 382620661 is about 725.9769064540.

The spelling of 382620661 in words is "three hundred eighty-two million, six hundred twenty thousand, six hundred sixty-one".