778080 has 48 divisors (see below), whose sum is σ = 2452464. Its totient is φ = 207360.

The previous prime is 778079. The next prime is 778081. The reversal of 778080 is 80877.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (778079) and next prime (778081).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778081) 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, 331 + ... + 1290.

It is an arithmetic number, because the mean of its divisors is an integer number (51093).

2⁷⁷⁸⁰⁸⁰ is an apocalyptic number.

It is an amenable number.

778080 is an abundant number, since it is smaller than the sum of its proper divisors (1674384).

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

778080 is a wasteful number, since it uses less digits than its factorization.

778080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639 (or 1631 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 778080 is about 882.0884309410. The cubic root of 778080 is about 91.9760492159.

It can be divided in two parts, 7 and 78080, that added together give a palindrome (78087).

The spelling of 778080 in words is "seven hundred seventy-eight thousand, eighty".