78820703 has 16 divisors (see below), whose sum is σ = 86468256. Its totient is φ = 71414400.

The previous prime is 78820691. The next prime is 78820711. The reversal of 78820703 is 30702887.

It is a happy number.

It is not a de Polignac number, because 78820703 - 2⁶ = 78820639 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 (78820783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226976 + ... + 227322.

It is an arithmetic number, because the mean of its divisors is an integer number (5404266).

Almost surely, 2^78820703 is an apocalyptic number.

78820703 is a deficient number, since it is larger than the sum of its proper divisors (7647553).

78820703 is a wasteful number, since it uses less digits than its factorization.

78820703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 78820703 is about 8878.1024436531. The cubic root of 78820703 is about 428.7591829668.

The spelling of 78820703 in words is "seventy-eight million, eight hundred twenty thousand, seven hundred three".