78276463 has 2 divisors, whose sum is σ = 78276464. Its totient is φ = 78276462.

The previous prime is 78276433. The next prime is 78276467. The reversal of 78276463 is 36467287.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78276463 - 2⁵ = 78276431 is a prime.

It is a super-2 number, since 2×78276463² = 12254409319580738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78276467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39138231 + 39138232.

It is an arithmetic number, because the mean of its divisors is an integer number (39138232).

Almost surely, 2^78276463 is an apocalyptic number.

78276463 is a deficient number, since it is larger than the sum of its proper divisors (1).

78276463 is an equidigital number, since it uses as much as digits as its factorization.

78276463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 43.

The square root of 78276463 is about 8847.3986572325. The cubic root of 78276463 is about 427.7700729533.

The spelling of 78276463 in words is "seventy-eight million, two hundred seventy-six thousand, four hundred sixty-three".