630001667 has 2 divisors, whose sum is σ = 630001668. Its totient is φ = 630001666.

The previous prime is 630001591. The next prime is 630001693. The reversal of 630001667 is 766100036.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630001667 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (630000667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315000833 + 315000834.

It is an arithmetic number, because the mean of its divisors is an integer number (315000834).

Almost surely, 2^630001667 is an apocalyptic number.

630001667 is a deficient number, since it is larger than the sum of its proper divisors (1).

630001667 is an equidigital number, since it uses as much as digits as its factorization.

630001667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 630001667 is about 25099.8340034352. The cubic root of 630001667 is about 857.2626443447.

The spelling of 630001667 in words is "six hundred thirty million, one thousand, six hundred sixty-seven".