78607643 has 8 divisors (see below), whose sum is σ = 84041568. Its totient is φ = 73263744.

The previous prime is 78607601. The next prime is 78607649. The reversal of 78607643 is 34670687.

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

It is not a de Polignac number, because 78607643 - 2²⁶ = 11498779 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 78607643.

It is not an unprimeable number, because it can be changed into a prime (78607649) 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, 20696 + ... + 24197.

It is an arithmetic number, because the mean of its divisors is an integer number (10505196).

Almost surely, 2^78607643 is an apocalyptic number.

78607643 is a deficient number, since it is larger than the sum of its proper divisors (5433925).

78607643 is a wasteful number, since it uses less digits than its factorization.

78607643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45013.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 78607643 is about 8866.0951382218. The cubic root of 78607643 is about 428.3725084745.

The spelling of 78607643 in words is "seventy-eight million, six hundred seven thousand, six hundred forty-three".