1214478677 has 2 divisors, whose sum is σ = 1214478678. Its totient is φ = 1214478676.

The previous prime is 1214478631. The next prime is 1214478773. The reversal of 1214478677 is 7768744121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1206103441 + 8375236 = 34729^2 + 2894^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214478677 - 2¹⁸ = 1214216533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1214478077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607239338 + 607239339.

It is an arithmetic number, because the mean of its divisors is an integer number (607239339).

Almost surely, 2^1214478677 is an apocalyptic number.

It is an amenable number.

1214478677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214478677 is an equidigital number, since it uses as much as digits as its factorization.

1214478677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 526848, while the sum is 47.

The square root of 1214478677 is about 34849.3712568821. The cubic root of 1214478677 is about 1066.9153530293.

The spelling of 1214478677 in words is "one billion, two hundred fourteen million, four hundred seventy-eight thousand, six hundred seventy-seven".