78798068 has 18 divisors (see below), whose sum is σ = 140567574. Its totient is φ = 38650144.

The previous prime is 78798067. The next prime is 78798089. The reversal of 78798068 is 86089787.

It can be written as a sum of positive squares in 3 ways, for example, as 41319184 + 37478884 = 6428^2 + 6122^2 .

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78798067) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7730 + ... + 14742.

Almost surely, 2^78798068 is an apocalyptic number.

It is an amenable number.

78798068 is a deficient number, since it is larger than the sum of its proper divisors (61769506).

78798068 is a wasteful number, since it uses less digits than its factorization.

78798068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7123 (or 7068 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 53.

The square root of 78798068 is about 8876.8275864748. The cubic root of 78798068 is about 428.7181366728.

The spelling of 78798068 in words is "seventy-eight million, seven hundred ninety-eight thousand, sixty-eight".