978007760 has 20 divisors (see below), whose sum is σ = 2273868228. Its totient is φ = 391203072.

The previous prime is 978007741. The next prime is 978007769. The reversal of 978007760 is 67700879.

978007760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 525509776 + 452497984 = 22924^2 + 21272^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978007769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6112469 + ... + 6112628.

Almost surely, 2^978007760 is an apocalyptic number.

It is an amenable number.

978007760 is an abundant number, since it is smaller than the sum of its proper divisors (1295860468).

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

978007760 is a wasteful number, since it uses less digits than its factorization.

978007760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12225110 (or 12225104 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 978007760 is about 31273.1156106967. The cubic root of 978007760 is about 992.6148471134.

The spelling of 978007760 in words is "nine hundred seventy-eight million, seven thousand, seven hundred sixty".