78000705 has 32 divisors (see below), whose sum is σ = 144702720. Its totient is φ = 39790080.

The previous prime is 78000679. The next prime is 78000721. The reversal of 78000705 is 50700087.

It is not a de Polignac number, because 78000705 - 2⁵ = 78000673 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9456 + ... + 15665.

It is an arithmetic number, because the mean of its divisors is an integer number (4521960).

Almost surely, 2^78000705 is an apocalyptic number.

It is an amenable number.

78000705 is a deficient number, since it is larger than the sum of its proper divisors (66702015).

78000705 is a wasteful number, since it uses less digits than its factorization.

78000705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25158 (or 25152 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 78000705 is about 8831.8007790031. The cubic root of 78000705 is about 427.2671554413.

The spelling of 78000705 in words is "seventy-eight million, seven hundred five", and thus it is an aban number.