630340679 has 2 divisors, whose sum is σ = 630340680. Its totient is φ = 630340678.

The previous prime is 630340673. The next prime is 630340681. The reversal of 630340679 is 976043036.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 630340679 - 2⁴ = 630340663 is a prime.

Together with 630340681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630340673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315170339 + 315170340.

It is an arithmetic number, because the mean of its divisors is an integer number (315170340).

Almost surely, 2^630340679 is an apocalyptic number.

630340679 is a deficient number, since it is larger than the sum of its proper divisors (1).

630340679 is an equidigital number, since it uses as much as digits as its factorization.

630340679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 630340679 is about 25106.5863669277. The cubic root of 630340679 is about 857.4163847898.

The spelling of 630340679 in words is "six hundred thirty million, three hundred forty thousand, six hundred seventy-nine".