706003621 has 2 divisors, whose sum is σ = 706003622. Its totient is φ = 706003620.

The previous prime is 706003609. The next prime is 706003631. The reversal of 706003621 is 126300607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 422754721 + 283248900 = 20561^2 + 16830^2 .

It is an emirp because it is prime and its reverse (126300607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 706003621 - 2¹¹ = 706001573 is a prime.

It is a super-2 number, since 2×706003621² = 996882225730223282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (706003631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353001810 + 353001811.

It is an arithmetic number, because the mean of its divisors is an integer number (353001811).

Almost surely, 2^706003621 is an apocalyptic number.

It is an amenable number.

706003621 is a deficient number, since it is larger than the sum of its proper divisors (1).

706003621 is an equidigital number, since it uses as much as digits as its factorization.

706003621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 706003621 is about 26570.7286501518. The cubic root of 706003621 is about 890.4351787533.

The spelling of 706003621 in words is "seven hundred six million, three thousand, six hundred twenty-one".