630275091 has 4 divisors (see below), whose sum is σ = 840366792. Its totient is φ = 420183392.

The previous prime is 630275089. The next prime is 630275117. The reversal of 630275091 is 190572036.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 630275091 - 2¹ = 630275089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (630275071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105045846 + ... + 105045851.

It is an arithmetic number, because the mean of its divisors is an integer number (210091698).

Almost surely, 2^630275091 is an apocalyptic number.

630275091 is a deficient number, since it is larger than the sum of its proper divisors (210091701).

630275091 is a wasteful number, since it uses less digits than its factorization.

630275091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210091700.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 630275091 is about 25105.2801418347. The cubic root of 630275091 is about 857.3866452228.

The spelling of 630275091 in words is "six hundred thirty million, two hundred seventy-five thousand, ninety-one".