78448985 has 8 divisors (see below), whose sum is σ = 96328320. Its totient is φ = 61299504.

The previous prime is 78448963. The next prime is 78449009. The reversal of 78448985 is 58984487.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78448985 - 2⁶ = 78448921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182225 + ... + 182654.

It is an arithmetic number, because the mean of its divisors is an integer number (12041040).

Almost surely, 2^78448985 is an apocalyptic number.

It is an amenable number.

78448985 is a deficient number, since it is larger than the sum of its proper divisors (17879335).

78448985 is a wasteful number, since it uses less digits than its factorization.

78448985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364927.

The product of its digits is 2580480, while the sum is 53.

The square root of 78448985 is about 8857.1431624424. The cubic root of 78448985 is about 428.0841119955.

The spelling of 78448985 in words is "seventy-eight million, four hundred forty-eight thousand, nine hundred eighty-five".