78641463 has 8 divisors (see below), whose sum is σ = 105148800. Its totient is φ = 52280888.

The previous prime is 78641449. The next prime is 78641477. The reversal of 78641463 is 36414687.

It is an interprime number because it is at equal distance from previous prime (78641449) and next prime (78641477).

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 78641463 - 2⁸ = 78641207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78641483) 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, 35433 + ... + 37586.

It is an arithmetic number, because the mean of its divisors is an integer number (13143600).

Almost surely, 2^78641463 is an apocalyptic number.

78641463 is a deficient number, since it is larger than the sum of its proper divisors (26507337).

78641463 is a wasteful number, since it uses less digits than its factorization.

78641463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73381.

The product of its digits is 96768, while the sum is 39.

The square root of 78641463 is about 8868.0021989172. The cubic root of 78641463 is about 428.4339337188.

Subtracting from 78641463 its sum of digits (39), we obtain a square (78641424 = 8868²).

The spelling of 78641463 in words is "seventy-eight million, six hundred forty-one thousand, four hundred sixty-three".