630385821861701 has 8 divisors (see below), whose sum is σ = 634105400141304. Its totient is φ = 626668845600960.

The previous prime is 630385821861689. The next prime is 630385821861703. The reversal of 630385821861701 is 107168128583036.

It can be written as a sum of positive squares in 4 ways, for example, as 7496786376676 + 622889035485025 = 2738026^2 + 24957745^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 630385821861701 - 2³⁸ = 630110943954757 is a prime.

It is a super-2 number, since 2×630385821861701² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630385821861703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650018750 + ... + 650987823.

It is an arithmetic number, because the mean of its divisors is an integer number (79263175017663).

Almost surely, 2^{630385821861701} is an apocalyptic number.

It is an amenable number.

630385821861701 is a deficient number, since it is larger than the sum of its proper divisors (3719578279603).

630385821861701 is a wasteful number, since it uses less digits than its factorization.

630385821861701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301009431.

The product of its (nonzero) digits is 11612160, while the sum is 59.

The spelling of 630385821861701 in words is "six hundred thirty trillion, three hundred eighty-five billion, eight hundred twenty-one million, eight hundred sixty-one thousand, seven hundred one".