64283515 has 4 divisors (see below), whose sum is σ = 77140224. Its totient is φ = 51426808.

The previous prime is 64283507. The next prime is 64283519. The reversal of 64283515 is 51538246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51538246 = 2 ⋅25769123.

It is a cyclic number.

It is not a de Polignac number, because 64283515 - 2³ = 64283507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64283519) 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 3 ways as a sum of consecutive naturals, for example, 6428347 + ... + 6428356.

It is an arithmetic number, because the mean of its divisors is an integer number (19285056).

Almost surely, 2^64283515 is an apocalyptic number.

64283515 is a deficient number, since it is larger than the sum of its proper divisors (12856709).

64283515 is a wasteful number, since it uses less digits than its factorization.

64283515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12856708.

The product of its digits is 28800, while the sum is 34.

The square root of 64283515 is about 8017.7001066391. The cubic root of 64283515 is about 400.5897862032.

The spelling of 64283515 in words is "sixty-four million, two hundred eighty-three thousand, five hundred fifteen".