78896680 has 16 divisors (see below), whose sum is σ = 177517620. Its totient is φ = 31558656.

The previous prime is 78896621. The next prime is 78896717. The reversal of 78896680 is 8669887.

It can be written as a sum of positive squares in 2 ways, for example, as 78180964 + 715716 = 8842^2 + 846^2 .

It is a super-2 number, since 2×78896680² = 12449372230044800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 986169 + ... + 986248.

Almost surely, 2^78896680 is an apocalyptic number.

It is an amenable number.

78896680 is an abundant number, since it is smaller than the sum of its proper divisors (98620940).

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

78896680 is a wasteful number, since it uses less digits than its factorization.

78896680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972428 (or 1972424 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 52.

The square root of 78896680 is about 8882.3803116057. The cubic root of 78896680 is about 428.8969021783.

The spelling of 78896680 in words is "seventy-eight million, eight hundred ninety-six thousand, six hundred eighty".