78767898 has 32 divisors (see below), whose sum is σ = 174044160. Its totient is φ = 23565360.

The previous prime is 78767879. The next prime is 78767917. The reversal of 78767898 is 89876787.

78767898 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (78767879) and next prime (78767917).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2340 + ... + 12767.

It is an arithmetic number, because the mean of its divisors is an integer number (5438880).

Almost surely, 2^78767898 is an apocalyptic number.

78767898 is an abundant number, since it is smaller than the sum of its proper divisors (95276262).

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

78767898 is a wasteful number, since it uses less digits than its factorization.

78767898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15202.

The product of its digits is 9483264, while the sum is 60.

The square root of 78767898 is about 8875.1280554142. The cubic root of 78767898 is about 428.6634141919.

Subtracting 78767898 from its reverse (89876787), we obtain a square (11108889 = 3333²).

The spelling of 78767898 in words is "seventy-eight million, seven hundred sixty-seven thousand, eight hundred ninety-eight".