64083505 has 8 divisors (see below), whose sum is σ = 76962600. Its totient is φ = 51225216.

The previous prime is 64083491. The next prime is 64083511. The reversal of 64083505 is 50538046.

It can be written as a sum of positive squares in 4 ways, for example, as 355216 + 63728289 = 596^2 + 7983^2 .

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 64083505 - 2¹³ = 64075313 is a prime.

It is a super-2 number, since 2×64083505² = 8213391226170050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2661 + ... + 11629.

It is an arithmetic number, because the mean of its divisors is an integer number (9620325).

Almost surely, 2^64083505 is an apocalyptic number.

It is an amenable number.

64083505 is a deficient number, since it is larger than the sum of its proper divisors (12879095).

64083505 is a wasteful number, since it uses less digits than its factorization.

64083505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10403.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 64083505 is about 8005.2173611964. The cubic root of 64083505 is about 400.1738931420.

The spelling of 64083505 in words is "sixty-four million, eighty-three thousand, five hundred five".