78407263 has 8 divisors (see below), whose sum is σ = 86618880. Its totient is φ = 70376280.

The previous prime is 78407257. The next prime is 78407267. The reversal of 78407263 is 36270487.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78407263 - 2⁹ = 78406751 is a prime.

It is a super-2 number, since 2×78407263² = 12295397782302338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78407267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44245 + ... + 45982.

It is an arithmetic number, because the mean of its divisors is an integer number (10827360).

Almost surely, 2^78407263 is an apocalyptic number.

78407263 is a deficient number, since it is larger than the sum of its proper divisors (8211617).

78407263 is a wasteful number, since it uses less digits than its factorization.

78407263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90317.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 78407263 is about 8854.7875750918. The cubic root of 78407263 is about 428.0082083470.

The spelling of 78407263 in words is "seventy-eight million, four hundred seven thousand, two hundred sixty-three".