78914516 has 6 divisors (see below), whose sum is σ = 138100410. Its totient is φ = 39457256.

The previous prime is 78914513. The next prime is 78914557. The reversal of 78914516 is 61541987.

It can be written as a sum of positive squares in only one way, i.e., 72931600 + 5982916 = 8540^2 + 2446^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78914513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9864311 + ... + 9864318.

It is an arithmetic number, because the mean of its divisors is an integer number (23016735).

Almost surely, 2^78914516 is an apocalyptic number.

It is an amenable number.

78914516 is a deficient number, since it is larger than the sum of its proper divisors (59185894).

78914516 is a wasteful number, since it uses less digits than its factorization.

78914516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19728633 (or 19728631 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 78914516 is about 8883.3842650197. The cubic root of 78914516 is about 428.9292196715.

The spelling of 78914516 in words is "seventy-eight million, nine hundred fourteen thousand, five hundred sixteen".