64074290641 has 9 divisors (see below), whose sum is σ = 64381788913. Its totient is φ = 63768257680.

The previous prime is 64074290597. The next prime is 64074290647. The reversal of 64074290641 is 14609247046.

The square root of 64074290641 is 253129.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 9934308241 + 54139982400 = 99671^2 + 232680^2 .

It is not a de Polignac number, because 64074290641 - 2⁹ = 64074290129 is a prime.

It is a super-2 number, since 2×64074290641² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64074290647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 68091231 + ... + 68092171.

Almost surely, 2^64074290641 is an apocalyptic number.

64074290641 is the 253129-th square number.

64074290641 is the 126565-th centered octagonal number.

It is an amenable number.

64074290641 is a deficient number, since it is larger than the sum of its proper divisors (307498272).

64074290641 is an frugal number, since it uses more digits than its factorization.

64074290641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2420 (or 1210 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 64074290641 in words is "sixty-four billion, seventy-four million, two hundred ninety thousand, six hundred forty-one".