630540812357 has 32 divisors (see below), whose sum is σ = 700625933280. Its totient is φ = 564769013760.

The previous prime is 630540812351. The next prime is 630540812399. The reversal of 630540812357 is 753218045036.

It is a Cunningham number, because it is equal to 794066²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 299899712161 + 330641100196 = 547631^2 + 575014^2 .

It is a cyclic number.

It is not a de Polignac number, because 630540812357 - 2³² = 626245845061 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 (630540812351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10052063 + ... + 10114595.

It is an arithmetic number, because the mean of its divisors is an integer number (21894560415).

Almost surely, 2^630540812357 is an apocalyptic number.

It is an amenable number.

630540812357 is a deficient number, since it is larger than the sum of its proper divisors (70085120923).

630540812357 is a wasteful number, since it uses less digits than its factorization.

630540812357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62873.

The product of its (nonzero) digits is 604800, while the sum is 44.

It can be divided in two parts, 630540 and 812357, that added together give a cube (1442897 = 113³).

The spelling of 630540812357 in words is "six hundred thirty billion, five hundred forty million, eight hundred twelve thousand, three hundred fifty-seven".