78632903 has 2 divisors, whose sum is σ = 78632904. Its totient is φ = 78632902.

The previous prime is 78632863. The next prime is 78632923. The reversal of 78632903 is 30923687.

It is a strong prime.

It is an emirp because it is prime and its reverse (30923687) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78632903 - 2⁶ = 78632839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78632923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39316451 + 39316452.

It is an arithmetic number, because the mean of its divisors is an integer number (39316452).

Almost surely, 2^78632903 is an apocalyptic number.

78632903 is a deficient number, since it is larger than the sum of its proper divisors (1).

78632903 is an equidigital number, since it uses as much as digits as its factorization.

78632903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 78632903 is about 8867.5195517123. The cubic root of 78632903 is about 428.4183883674.

The spelling of 78632903 in words is "seventy-eight million, six hundred thirty-two thousand, nine hundred three".