78963643 has 8 divisors (see below), whose sum is σ = 86264496. Its totient is φ = 71683200.

The previous prime is 78963613. The next prime is 78963673. The reversal of 78963643 is 34636987.

It is an interprime number because it is at equal distance from previous prime (78963613) and next prime (78963673).

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-78963643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78963593 and 78963602.

It is not an unprimeable number, because it can be changed into a prime (78963613) 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, 3655 + ... + 13087.

It is an arithmetic number, because the mean of its divisors is an integer number (10783062).

Almost surely, 2^78963643 is an apocalyptic number.

78963643 is a deficient number, since it is larger than the sum of its proper divisors (7300853).

78963643 is a wasteful number, since it uses less digits than its factorization.

78963643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10205.

The product of its digits is 653184, while the sum is 46.

The square root of 78963643 is about 8886.1489409080. The cubic root of 78963643 is about 429.0182089376.

The spelling of 78963643 in words is "seventy-eight million, nine hundred sixty-three thousand, six hundred forty-three".