78034783 has 4 divisors (see below), whose sum is σ = 78513688. Its totient is φ = 77555880.

The previous prime is 78034687. The next prime is 78034793. The reversal of 78034783 is 38743087.

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

It is a cyclic number.

It is not a de Polignac number, because 78034783 - 2¹⁷ = 77903711 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 (78034793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239208 + ... + 239533.

It is an arithmetic number, because the mean of its divisors is an integer number (19628422).

Almost surely, 2^78034783 is an apocalyptic number.

78034783 is a deficient number, since it is larger than the sum of its proper divisors (478905).

78034783 is a wasteful number, since it uses less digits than its factorization.

78034783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478904.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 78034783 is about 8833.7298464465. The cubic root of 78034783 is about 427.3293697943.

The spelling of 78034783 in words is "seventy-eight million, thirty-four thousand, seven hundred eighty-three".