978765768 has 60 divisors (see below), whose sum is σ = 2743682865. Its totient is φ = 325989792.

The previous prime is 978765763. The next prime is 978765833. The reversal of 978765768 is 867567879.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 600152004 + 378613764 = 24498^2 + 19458^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=22122.

It is not an unprimeable number, because it can be changed into a prime (978765761) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 795778 + ... + 797006.

Almost surely, 2^978765768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 978765768

978765768 is an abundant number, since it is smaller than the sum of its proper divisors (1764917097).

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

978765768 is an equidigital number, since it uses as much as digits as its factorization.

978765768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476 (or 1234 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 63.

The square root of 978765768 is about 31285.2324268176. The cubic root of 978765768 is about 992.8712239793.

The spelling of 978765768 in words is "nine hundred seventy-eight million, seven hundred sixty-five thousand, seven hundred sixty-eight".