78538895 has 8 divisors (see below), whose sum is σ = 99790704. Its totient is φ = 59135104.

The previous prime is 78538891. The next prime is 78538919. The reversal of 78538895 is 59883587.

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 78538895 - 2² = 78538891 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78538891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461909 + ... + 462078.

It is an arithmetic number, because the mean of its divisors is an integer number (12473838).

Almost surely, 2^78538895 is an apocalyptic number.

78538895 is a deficient number, since it is larger than the sum of its proper divisors (21251809).

78538895 is a wasteful number, since it uses less digits than its factorization.

78538895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924009.

The product of its digits is 2419200, while the sum is 53.

The square root of 78538895 is about 8862.2172733464. The cubic root of 78538895 is about 428.2475912630.

The spelling of 78538895 in words is "seventy-eight million, five hundred thirty-eight thousand, eight hundred ninety-five".