64283915 has 16 divisors (see below), whose sum is σ = 78575616. Its totient is φ = 50479200.

The previous prime is 64283833. The next prime is 64283917. The reversal of 64283915 is 51938246.

It is a happy number.

It is not a de Polignac number, because 64283915 - 2¹⁰ = 64282891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64283917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78860 + ... + 79670.

It is an arithmetic number, because the mean of its divisors is an integer number (4910976).

Almost surely, 2^64283915 is an apocalyptic number.

64283915 is a deficient number, since it is larger than the sum of its proper divisors (14291701).

64283915 is a wasteful number, since it uses less digits than its factorization.

64283915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090.

The product of its digits is 51840, while the sum is 38.

The square root of 64283915 is about 8017.7250514095. The cubic root of 64283915 is about 400.5906170828.

The spelling of 64283915 in words is "sixty-four million, two hundred eighty-three thousand, nine hundred fifteen".