78897635 has 16 divisors (see below), whose sum is σ = 98019072. Its totient is φ = 60902400.

The previous prime is 78897619. The next prime is 78897649. The reversal of 78897635 is 53679887.

It is not a de Polignac number, because 78897635 - 2⁴ = 78897619 is a prime.

It is a Duffinian number.

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, 80267 + ... + 81243.

It is an arithmetic number, because the mean of its divisors is an integer number (6126192).

Almost surely, 2^78897635 is an apocalyptic number.

78897635 is a deficient number, since it is larger than the sum of its proper divisors (19121437).

78897635 is a wasteful number, since it uses less digits than its factorization.

78897635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534.

The product of its digits is 2540160, while the sum is 53.

The square root of 78897635 is about 8882.4340695555. The cubic root of 78897635 is about 428.8986326900.

The spelling of 78897635 in words is "seventy-eight million, eight hundred ninety-seven thousand, six hundred thirty-five".