630099797 has 4 divisors (see below), whose sum is σ = 637179660. Its totient is φ = 623019936.

The previous prime is 630099787. The next prime is 630099817. The reversal of 630099797 is 797990036.

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 338339236 + 291760561 = 18394^2 + 17081^2 .

It is not a de Polignac number, because 630099797 - 2¹⁸ = 629837653 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 (630099787) 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, 3539798 + ... + 3539975.

It is an arithmetic number, because the mean of its divisors is an integer number (159294915).

Almost surely, 2^630099797 is an apocalyptic number.

It is an amenable number.

630099797 is a deficient number, since it is larger than the sum of its proper divisors (7079863).

630099797 is an equidigital number, since it uses as much as digits as its factorization.

630099797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7079862.

The product of its (nonzero) digits is 642978, while the sum is 50.

The square root of 630099797 is about 25101.7887211250. The cubic root of 630099797 is about 857.3071515370.

The spelling of 630099797 in words is "six hundred thirty million, ninety-nine thousand, seven hundred ninety-seven".