78648085 has 16 divisors (see below), whose sum is σ = 98445312. Its totient is φ = 60249600.

The previous prime is 78648071. The next prime is 78648091. The reversal of 78648085 is 58084687.

It is not a de Polignac number, because 78648085 - 2⁷ = 78647957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12420 + ... + 17650.

It is an arithmetic number, because the mean of its divisors is an integer number (6152832).

Almost surely, 2^78648085 is an apocalyptic number.

It is an amenable number.

78648085 is a deficient number, since it is larger than the sum of its proper divisors (19797227).

78648085 is a wasteful number, since it uses less digits than its factorization.

78648085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5364.

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 78648085 is about 8868.3755558727. The cubic root of 78648085 is about 428.4459587998.

The spelling of 78648085 in words is "seventy-eight million, six hundred forty-eight thousand, eighty-five".