630842111 has 4 divisors (see below), whose sum is σ = 634712472. Its totient is φ = 626971752.

The previous prime is 630842083. The next prime is 630842117. The reversal of 630842111 is 111248036.

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 630842111 - 2¹⁰ = 630841087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630842117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1934936 + ... + 1935261.

It is an arithmetic number, because the mean of its divisors is an integer number (158678118).

Almost surely, 2^630842111 is an apocalyptic number.

630842111 is a deficient number, since it is larger than the sum of its proper divisors (3870361).

630842111 is a wasteful number, since it uses less digits than its factorization.

630842111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3870360.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 630842111 is about 25116.5704466195. The cubic root of 630842111 is about 857.6436809560.

The spelling of 630842111 in words is "six hundred thirty million, eight hundred forty-two thousand, one hundred eleven".