78945263 has 12 divisors (see below), whose sum is σ = 84400440. Its totient is φ = 73825152.

The previous prime is 78945233. The next prime is 78945287. The reversal of 78945263 is 36254987.

It is not a de Polignac number, because 78945263 - 2²⁴ = 62168047 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 (78945203) 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 11 ways as a sum of consecutive naturals, for example, 49208 + ... + 50786.

It is an arithmetic number, because the mean of its divisors is an integer number (7033370).

Almost surely, 2^78945263 is an apocalyptic number.

78945263 is a deficient number, since it is larger than the sum of its proper divisors (5455177).

78945263 is a wasteful number, since it uses less digits than its factorization.

78945263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786 (or 1769 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 78945263 is about 8885.1146869357. The cubic root of 78945263 is about 428.9849194968.

The spelling of 78945263 in words is "seventy-eight million, nine hundred forty-five thousand, two hundred sixty-three".