78612203 has 2 divisors, whose sum is σ = 78612204. Its totient is φ = 78612202.

The previous prime is 78612173. The next prime is 78612221. The reversal of 78612203 is 30221687.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78612203 - 2²⁰ = 77563627 is a prime.

It is not a weakly prime, because it can be changed into another prime (78612223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39306101 + 39306102.

It is an arithmetic number, because the mean of its divisors is an integer number (39306102).

Almost surely, 2^78612203 is an apocalyptic number.

78612203 is a deficient number, since it is larger than the sum of its proper divisors (1).

78612203 is an equidigital number, since it uses as much as digits as its factorization.

78612203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 78612203 is about 8866.3522939256. The cubic root of 78612203 is about 428.3807915574.

The spelling of 78612203 in words is "seventy-eight million, six hundred twelve thousand, two hundred three".