78864060 has 144 divisors (see below), whose sum is σ = 255007872. Its totient is φ = 18057600.

The previous prime is 78864059. The next prime is 78864067. The reversal of 78864060 is 6046887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78864067) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 238095 + ... + 238425.

It is an arithmetic number, because the mean of its divisors is an integer number (1770888).

Almost surely, 2^78864060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78864060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127503936).

78864060 is an abundant number, since it is smaller than the sum of its proper divisors (176143812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78864060 is a wasteful number, since it uses less digits than its factorization.

78864060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 78864060 is about 8880.5439022618. The cubic root of 78864060 is about 428.8377845849.

The spelling of 78864060 in words is "seventy-eight million, eight hundred sixty-four thousand, sixty".