630685693585 has 8 divisors (see below), whose sum is σ = 757152329256. Its totient is φ = 504328890240.

The previous prime is 630685693559. The next prime is 630685693639. The reversal of 630685693585 is 585396586036.

It can be written as a sum of positive squares in 4 ways, for example, as 240201930816 + 390483762769 = 490104^2 + 624887^2 .

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

It is not a de Polignac number, because 630685693585 - 2¹⁵ = 630685660817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27445446 + ... + 27468415.

It is an arithmetic number, because the mean of its divisors is an integer number (94644041157).

Almost surely, 2^630685693585 is an apocalyptic number.

It is an amenable number.

630685693585 is a deficient number, since it is larger than the sum of its proper divisors (126466635671).

630685693585 is a wasteful number, since it uses less digits than its factorization.

630685693585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54916163.

The product of its (nonzero) digits is 139968000, while the sum is 64.

The spelling of 630685693585 in words is "six hundred thirty billion, six hundred eighty-five million, six hundred ninety-three thousand, five hundred eighty-five".