78655080 has 64 divisors (see below), whose sum is σ = 269677440. Its totient is φ = 17978112.

The previous prime is 78655067. The next prime is 78655121. The reversal of 78655080 is 8055687.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45979 + ... + 47658.

It is an arithmetic number, because the mean of its divisors is an integer number (4213710).

Almost surely, 2^78655080 is an apocalyptic number.

78655080 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78655080 is an abundant number, since it is smaller than the sum of its proper divisors (191022360).

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

78655080 is a wasteful number, since it uses less digits than its factorization.

78655080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93658 (or 93654 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 78655080 is about 8868.7699259818. The cubic root of 78655080 is about 428.4586604892.

The spelling of 78655080 in words is "seventy-eight million, six hundred fifty-five thousand, eighty".