78501696 has 112 divisors (see below), whose sum is σ = 255690624. Its totient is φ = 20699136.

The previous prime is 78501671. The next prime is 78501697. The reversal of 78501696 is 69610587.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78501697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15226 + ... + 19718.

It is an arithmetic number, because the mean of its divisors is an integer number (2282952).

Almost surely, 2^78501696 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 78501696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127845312).

78501696 is an abundant number, since it is smaller than the sum of its proper divisors (177188928).

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

78501696 is a wasteful number, since it uses less digits than its factorization.

78501696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4528 (or 4518 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 78501696 is about 8860.1182836348. The cubic root of 78501696 is about 428.1799691509.

It can be divided in two parts, 78501 and 696, that added together give a palindrome (79197).

The spelling of 78501696 in words is "seventy-eight million, five hundred one thousand, six hundred ninety-six".