78802643 has 8 divisors (see below), whose sum is σ = 79380000. Its totient is φ = 78227968.

The previous prime is 78802639. The next prime is 78802649. The reversal of 78802643 is 34620887.

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 78802643 - 2² = 78802639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78802597 and 78802606.

It is not an unprimeable number, because it can be changed into a prime (78802649) 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, 131258 + ... + 131856.

It is an arithmetic number, because the mean of its divisors is an integer number (9922500).

Almost surely, 2^78802643 is an apocalyptic number.

78802643 is a deficient number, since it is larger than the sum of its proper divisors (577357).

78802643 is a wasteful number, since it uses less digits than its factorization.

78802643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 78802643 is about 8877.0852761478. The cubic root of 78802643 is about 428.7264336085.

The spelling of 78802643 in words is "seventy-eight million, eight hundred two thousand, six hundred forty-three".