64127005 has 8 divisors (see below), whose sum is σ = 77175000. Its totient is φ = 51153216.

The previous prime is 64126981. The next prime is 64127017. The reversal of 64127005 is 50072146.

It can be written as a sum of positive squares in 4 ways, for example, as 3193369 + 60933636 = 1787^2 + 7806^2 .

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 64127005 - 2⁷ = 64126877 is a prime.

It is a super-2 number, since 2×64127005² = 8224545540540050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16630 + ... + 20119.

It is an arithmetic number, because the mean of its divisors is an integer number (9646875).

Almost surely, 2^64127005 is an apocalyptic number.

It is an amenable number.

64127005 is a deficient number, since it is larger than the sum of its proper divisors (13047995).

64127005 is a wasteful number, since it uses less digits than its factorization.

64127005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37103.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 64127005 is about 8007.9338783484. The cubic root of 64127005 is about 400.2644189181.

The spelling of 64127005 in words is "sixty-four million, one hundred twenty-seven thousand, five".