78345703 has 4 divisors (see below), whose sum is σ = 78739600. Its totient is φ = 77951808.

The previous prime is 78345697. The next prime is 78345737. The reversal of 78345703 is 30754387.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78345703 is a prime.

It is a super-3 number, since 3×78345703³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78345763) 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, 196650 + ... + 197047.

It is an arithmetic number, because the mean of its divisors is an integer number (19684900).

Almost surely, 2^78345703 is an apocalyptic number.

78345703 is a deficient number, since it is larger than the sum of its proper divisors (393897).

78345703 is a wasteful number, since it uses less digits than its factorization.

78345703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393896.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 78345703 is about 8851.3108068805. The cubic root of 78345703 is about 427.8961647985.

The spelling of 78345703 in words is "seventy-eight million, three hundred forty-five thousand, seven hundred three".