78680122 has 4 divisors (see below), whose sum is σ = 118020186. Its totient is φ = 39340060.

The previous prime is 78680113. The next prime is 78680123. The reversal of 78680122 is 22108687.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22108687 = 17 ⋅1300511.

It can be written as a sum of positive squares in only one way, i.e., 68046001 + 10634121 = 8249^2 + 3261^2 .

It is not an unprimeable number, because it can be changed into a prime (78680123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19670029 + ... + 19670032.

Almost surely, 2^78680122 is an apocalyptic number.

78680122 is a deficient number, since it is larger than the sum of its proper divisors (39340064).

78680122 is a wasteful number, since it uses less digits than its factorization.

78680122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39340063.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 78680122 is about 8870.1816215904. The cubic root of 78680122 is about 428.5041261828.

It can be divided in two parts, 786 and 80122, that added together give a palindrome (80908).

The spelling of 78680122 in words is "seventy-eight million, six hundred eighty thousand, one hundred twenty-two".