64378748 has 36 divisors (see below), whose sum is σ = 136764432. Its totient is φ = 26389440.

The previous prime is 64378747. The next prime is 64378799. The reversal of 64378748 is 84787346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64378747) 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 11 ways as a sum of consecutive naturals, for example, 2633 + ... + 11648.

It is an arithmetic number, because the mean of its divisors is an integer number (3799012).

Almost surely, 2^64378748 is an apocalyptic number.

It is an amenable number.

64378748 is an abundant number, since it is smaller than the sum of its proper divisors (72385684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64378748 is a wasteful number, since it uses less digits than its factorization.

64378748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14322 (or 14313 counting only the distinct ones).

The product of its digits is 903168, while the sum is 47.

The square root of 64378748 is about 8023.6368312630. The cubic root of 64378748 is about 400.7875068981.

The spelling of 64378748 in words is "sixty-four million, three hundred seventy-eight thousand, seven hundred forty-eight".