78802861 has 8 divisors (see below), whose sum is σ = 84974400. Its totient is φ = 72833760.

The previous prime is 78802847. The next prime is 78802873. The reversal of 78802861 is 16820887.

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 78802861 - 2⁷ = 78802733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78808861) 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, 49801 + ... + 51358.

It is an arithmetic number, because the mean of its divisors is an integer number (10621800).

Almost surely, 2^78802861 is an apocalyptic number.

It is an amenable number.

78802861 is a deficient number, since it is larger than the sum of its proper divisors (6171539).

78802861 is a wasteful number, since it uses less digits than its factorization.

78802861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101219.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 78802861 is about 8877.0975549444. The cubic root of 78802861 is about 428.7268289518.

The spelling of 78802861 in words is "seventy-eight million, eight hundred two thousand, eight hundred sixty-one".