646030941361 has 8 divisors (see below), whose sum is σ = 699330427880. Its totient is φ = 593246426112.

The previous prime is 646030941359. The next prime is 646030941403. The reversal of 646030941361 is 163149030646.

646030941361 = 568344² + 568345².

It can be written as a sum of positive squares in 4 ways, for example, as 9889109136 + 636141832225 = 99444^2 + 797585^2 .

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 646030941361 - 2¹ = 646030941359 is a prime.

It is the 803761-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646030941301) by changing a digit.

It is a nontrivial repunit in base 803760.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128740206 + ... + 128745223.

It is an arithmetic number, because the mean of its divisors is an integer number (87416303485).

Almost surely, 2^646030941361 is an apocalyptic number.

646030941361 is the 568345-th centered square number.

It is an amenable number.

646030941361 is a deficient number, since it is larger than the sum of its proper divisors (53299486519).

646030941361 is a wasteful number, since it uses less digits than its factorization.

646030941361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257485635.

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 646030941361 in words is "six hundred forty-six billion, thirty million, nine hundred forty-one thousand, three hundred sixty-one".