78845533 has 8 divisors (see below), whose sum is σ = 86178848. Its totient is φ = 71693424.

The previous prime is 78845527. The next prime is 78845551. The reversal of 78845533 is 33554887.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78845533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78845533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78845513) 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, 44391 + ... + 46132.

It is an arithmetic number, because the mean of its divisors is an integer number (10772356).

Almost surely, 2^78845533 is an apocalyptic number.

It is an amenable number.

78845533 is a deficient number, since it is larger than the sum of its proper divisors (7333315).

78845533 is a wasteful number, since it uses less digits than its factorization.

78845533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90603.

The product of its digits is 403200, while the sum is 43.

The square root of 78845533 is about 8879.5007179458. The cubic root of 78845533 is about 428.8042006352.

The spelling of 78845533 in words is "seventy-eight million, eight hundred forty-five thousand, five hundred thirty-three".