78612283 has 2 divisors, whose sum is σ = 78612284. Its totient is φ = 78612282.

The previous prime is 78612277. The next prime is 78612319. The reversal of 78612283 is 38221687.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78612283 is a prime.

It is not a weakly prime, because it can be changed into another prime (78612203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39306141 + 39306142.

It is an arithmetic number, because the mean of its divisors is an integer number (39306142).

Almost surely, 2^78612283 is an apocalyptic number.

78612283 is a deficient number, since it is larger than the sum of its proper divisors (1).

78612283 is an equidigital number, since it uses as much as digits as its factorization.

78612283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 78612283 is about 8866.3568053626. The cubic root of 78612283 is about 428.3809368718.

The spelling of 78612283 in words is "seventy-eight million, six hundred twelve thousand, two hundred eighty-three".