630870101 has 8 divisors (see below), whose sum is σ = 636905880. Its totient is φ = 624863232.

The previous prime is 630870041. The next prime is 630870103. The reversal of 630870101 is 101078036.

It can be written as a sum of positive squares in 4 ways, for example, as 29149201 + 601720900 = 5399^2 + 24530^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630870101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630870103) 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 7 ways as a sum of consecutive naturals, for example, 37955 + ... + 51983.

It is an arithmetic number, because the mean of its divisors is an integer number (79613235).

Almost surely, 2^630870101 is an apocalyptic number.

It is an amenable number.

630870101 is a deficient number, since it is larger than the sum of its proper divisors (6035779).

630870101 is a wasteful number, since it uses less digits than its factorization.

630870101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14455.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 630870101 is about 25117.1276423081. The cubic root of 630870101 is about 857.6563651079.

The spelling of 630870101 in words is "six hundred thirty million, eight hundred seventy thousand, one hundred one".