78577078 has 8 divisors (see below), whose sum is σ = 118646640. Its totient is φ = 39028200.

The previous prime is 78577073. The next prime is 78577099. The reversal of 78577078 is 87077587.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78577073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129793 + ... + 130396.

It is an arithmetic number, because the mean of its divisors is an integer number (14830830).

Almost surely, 2^78577078 is an apocalyptic number.

78577078 is a deficient number, since it is larger than the sum of its proper divisors (40069562).

78577078 is a wasteful number, since it uses less digits than its factorization.

78577078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260342.

The product of its (nonzero) digits is 768320, while the sum is 49.

The square root of 78577078 is about 8864.3712693005. The cubic root of 78577078 is about 428.3169799339.

The spelling of 78577078 in words is "seventy-eight million, five hundred seventy-seven thousand, seventy-eight".