630700397 has 2 divisors, whose sum is σ = 630700398. Its totient is φ = 630700396.

The previous prime is 630700387. The next prime is 630700423. The reversal of 630700397 is 793007036.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 521163241 + 109537156 = 22829^2 + 10466^2 .

It is a cyclic number.

It is not a de Polignac number, because 630700397 - 2²⁶ = 563591533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630700327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315350198 + 315350199.

It is an arithmetic number, because the mean of its divisors is an integer number (315350199).

Almost surely, 2^630700397 is an apocalyptic number.

It is an amenable number.

630700397 is a deficient number, since it is larger than the sum of its proper divisors (1).

630700397 is an equidigital number, since it uses as much as digits as its factorization.

630700397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 35.

The square root of 630700397 is about 25113.7491625603. The cubic root of 630700397 is about 857.5794550498.

The spelling of 630700397 in words is "six hundred thirty million, seven hundred thousand, three hundred ninety-seven".