78027605 has 8 divisors (see below), whose sum is σ = 93700152. Its totient is φ = 62377408.

The previous prime is 78027581. The next prime is 78027619. The reversal of 78027605 is 50672087.

It can be written as a sum of positive squares in 4 ways, for example, as 2093809 + 75933796 = 1447^2 + 8714^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78027605 - 2⁸ = 78027349 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 7 ways as a sum of consecutive naturals, for example, 3419 + ... + 12951.

It is an arithmetic number, because the mean of its divisors is an integer number (11712519).

Almost surely, 2^78027605 is an apocalyptic number.

It is an amenable number.

78027605 is a deficient number, since it is larger than the sum of its proper divisors (15672547).

78027605 is a wasteful number, since it uses less digits than its factorization.

78027605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11175.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 78027605 is about 8833.3235534537. The cubic root of 78027605 is about 427.3162668157.

The spelling of 78027605 in words is "seventy-eight million, twenty-seven thousand, six hundred five".