1216074677 has 2 divisors, whose sum is σ = 1216074678. Its totient is φ = 1216074676.

The previous prime is 1216074667. The next prime is 1216074683. The reversal of 1216074677 is 7764706121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1028549041 + 187525636 = 32071^2 + 13694^2 .

It is a cyclic number.

It is not a de Polignac number, because 1216074677 - 2⁸ = 1216074421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1216074667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608037338 + 608037339.

It is an arithmetic number, because the mean of its divisors is an integer number (608037339).

Almost surely, 2^1216074677 is an apocalyptic number.

It is an amenable number.

1216074677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216074677 is an equidigital number, since it uses as much as digits as its factorization.

1216074677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 1216074677 is about 34872.2622868090. The cubic root of 1216074677 is about 1067.3825086281.

The spelling of 1216074677 in words is "one billion, two hundred sixteen million, seventy-four thousand, six hundred seventy-seven".