630287197 has 4 divisors (see below), whose sum is σ = 640619836. Its totient is φ = 619954560.

The previous prime is 630287191. The next prime is 630287227. The reversal of 630287197 is 791782036.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 70207641 + 560079556 = 8379^2 + 23666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630287197 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 (630287191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5166228 + ... + 5166349.

It is an arithmetic number, because the mean of its divisors is an integer number (160154959).

Almost surely, 2^630287197 is an apocalyptic number.

It is an amenable number.

630287197 is a deficient number, since it is larger than the sum of its proper divisors (10332639).

630287197 is a wasteful number, since it uses less digits than its factorization.

630287197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10332638.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 630287197 is about 25105.5212453357. The cubic root of 630287197 is about 857.3921346017.

It can be divided in two parts, 63028 and 7197, that added together give a square (70225 = 265²).

The spelling of 630287197 in words is "six hundred thirty million, two hundred eighty-seven thousand, one hundred ninety-seven".