78605878 has 8 divisors (see below), whose sum is σ = 126978768. Its totient is φ = 36279624.

The previous prime is 78605861. The next prime is 78605887. The reversal of 78605878 is 87850687.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1511626 + ... + 1511677.

It is an arithmetic number, because the mean of its divisors is an integer number (15872346).

Almost surely, 2^78605878 is an apocalyptic number.

78605878 is a deficient number, since it is larger than the sum of its proper divisors (48372890).

78605878 is a wasteful number, since it uses less digits than its factorization.

78605878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023318.

The product of its (nonzero) digits is 752640, while the sum is 49.

The square root of 78605878 is about 8865.9956011719. The cubic root of 78605878 is about 428.3693023268.

The spelling of 78605878 in words is "seventy-eight million, six hundred five thousand, eight hundred seventy-eight".