64878063 has 8 divisors (see below), whose sum is σ = 87476400. Its totient is φ = 42765888.

The previous prime is 64878061. The next prime is 64878083. The reversal of 64878063 is 36087846.

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

It is not a de Polignac number, because 64878063 - 2¹ = 64878061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64878061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121228 + ... + 121761.

It is an arithmetic number, because the mean of its divisors is an integer number (10934550).

Almost surely, 2^64878063 is an apocalyptic number.

64878063 is a deficient number, since it is larger than the sum of its proper divisors (22598337).

64878063 is a wasteful number, since it uses less digits than its factorization.

64878063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243081.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 64878063 is about 8054.6919866622. The cubic root of 64878063 is about 401.8209952770.

The spelling of 64878063 in words is "sixty-four million, eight hundred seventy-eight thousand, sixty-three".