78680333 has 4 divisors (see below), whose sum is σ = 79254780. Its totient is φ = 78105888.

The previous prime is 78680323. The next prime is 78680339. The reversal of 78680333 is 33308687.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44129449 + 34550884 = 6643^2 + 5878^2 .

It is a cyclic number.

It is not a de Polignac number, because 78680333 - 2¹⁰ = 78679309 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 (78680339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287018 + ... + 287291.

It is an arithmetic number, because the mean of its divisors is an integer number (19813695).

Almost surely, 2^78680333 is an apocalyptic number.

It is an amenable number.

78680333 is a deficient number, since it is larger than the sum of its proper divisors (574447).

78680333 is a wasteful number, since it uses less digits than its factorization.

78680333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574446.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 78680333 is about 8870.1935153637. The cubic root of 78680333 is about 428.5045092287.

The spelling of 78680333 in words is "seventy-eight million, six hundred eighty thousand, three hundred thirty-three".