78500773 has 16 divisors (see below), whose sum is σ = 89413632. Its totient is φ = 68400000.

The previous prime is 78500749. The next prime is 78500797. The reversal of 78500773 is 37700587.

It is an interprime number because it is at equal distance from previous prime (78500749) and next prime (78500797).

It is a cyclic number.

It is not a de Polignac number, because 78500773 - 2¹³ = 78492581 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 (78500743) 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, 14148 + ... + 18898.

It is an arithmetic number, because the mean of its divisors is an integer number (5588352).

Almost surely, 2^78500773 is an apocalyptic number.

It is an amenable number.

78500773 is a deficient number, since it is larger than the sum of its proper divisors (10912859).

78500773 is a wasteful number, since it uses less digits than its factorization.

78500773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4836.

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 78500773 is about 8860.0661961410. The cubic root of 78500773 is about 428.1782910060.

The spelling of 78500773 in words is "seventy-eight million, five hundred thousand, seven hundred seventy-three".