78985583 has 8 divisors (see below), whose sum is σ = 80401536. Its totient is φ = 77578200.

The previous prime is 78985579. The next prime is 78985591. The reversal of 78985583 is 38558987.

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 78985583 - 2² = 78985579 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78985513) 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, 18128 + ... + 22058.

It is an arithmetic number, because the mean of its divisors is an integer number (10050192).

Almost surely, 2^78985583 is an apocalyptic number.

78985583 is a deficient number, since it is larger than the sum of its proper divisors (1415953).

78985583 is a wasteful number, since it uses less digits than its factorization.

78985583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285.

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

The square root of 78985583 is about 8887.3833606973. The cubic root of 78985583 is about 429.0579394073.

The spelling of 78985583 in words is "seventy-eight million, nine hundred eighty-five thousand, five hundred eighty-three".