64448215 has 8 divisors (see below), whose sum is σ = 83287008. Its totient is φ = 47592480.

The previous prime is 64448143. The next prime is 64448239. The reversal of 64448215 is 51284446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64448215 - 2¹³ = 64440023 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 495691 + ... + 495820.

It is an arithmetic number, because the mean of its divisors is an integer number (10410876).

Almost surely, 2^64448215 is an apocalyptic number.

64448215 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64448215 is a deficient number, since it is larger than the sum of its proper divisors (18838793).

64448215 is a wasteful number, since it uses less digits than its factorization.

64448215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991529.

The product of its digits is 30720, while the sum is 34.

The square root of 64448215 is about 8027.9645614564. The cubic root of 64448215 is about 400.9316098234.

The spelling of 64448215 in words is "sixty-four million, four hundred forty-eight thousand, two hundred fifteen".