64978048 has 16 divisors (see below), whose sum is σ = 129448710. Its totient is φ = 32488960.

The previous prime is 64978037. The next prime is 64978049. The reversal of 64978048 is 84087946.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49674304 + 15303744 = 7048^2 + 3912^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 64977989 and 64978007.

It is not an unprimeable number, because it can be changed into a prime (64978049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253693 + ... + 253948.

Almost surely, 2^64978048 is an apocalyptic number.

It is an amenable number.

64978048 is a deficient number, since it is larger than the sum of its proper divisors (64470662).

64978048 is an equidigital number, since it uses as much as digits as its factorization.

64978048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507655 (or 507643 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 64978048 is about 8060.8962280878. The cubic root of 64978048 is about 402.0273077000.

The spelling of 64978048 in words is "sixty-four million, nine hundred seventy-eight thousand, forty-eight".