630255797 has 4 divisors (see below), whose sum is σ = 630992076. Its totient is φ = 629519520.

The previous prime is 630255779. The next prime is 630255799. The reversal of 630255797 is 797552036.

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 353665636 + 276590161 = 18806^2 + 16631^2 .

It is a cyclic number.

It is not a de Polignac number, because 630255797 - 2¹⁶ = 630190261 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 (630255799) 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, 366854 + ... + 368567.

It is an arithmetic number, because the mean of its divisors is an integer number (157748019).

Almost surely, 2^630255797 is an apocalyptic number.

It is an amenable number.

630255797 is a deficient number, since it is larger than the sum of its proper divisors (736279).

630255797 is an equidigital number, since it uses as much as digits as its factorization.

630255797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736278.

The product of its (nonzero) digits is 396900, while the sum is 44.

The square root of 630255797 is about 25104.8958770994. The cubic root of 630255797 is about 857.3778963516.

The spelling of 630255797 in words is "six hundred thirty million, two hundred fifty-five thousand, seven hundred ninety-seven".