78933643 has 8 divisors (see below), whose sum is σ = 79623648. Its totient is φ = 78247104.

The previous prime is 78933641. The next prime is 78933667. The reversal of 78933643 is 34633987.

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 78933643 - 2¹ = 78933641 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 78933643.

It is not an unprimeable number, because it can be changed into a prime (78933641) 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, 63930 + ... + 65152.

It is an arithmetic number, because the mean of its divisors is an integer number (9952956).

Almost surely, 2^78933643 is an apocalyptic number.

78933643 is a deficient number, since it is larger than the sum of its proper divisors (690005).

78933643 is a wasteful number, since it uses less digits than its factorization.

78933643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733.

The product of its digits is 326592, while the sum is 43.

The square root of 78933643 is about 8884.4607602263. The cubic root of 78933643 is about 428.9638709493.

The spelling of 78933643 in words is "seventy-eight million, nine hundred thirty-three thousand, six hundred forty-three".