1214704661 has 2 divisors, whose sum is σ = 1214704662. Its totient is φ = 1214704660.

The previous prime is 1214704649. The next prime is 1214704691. The reversal of 1214704661 is 1664074121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1176078436 + 38626225 = 34294^2 + 6215^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214704661 - 2¹⁸ = 1214442517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1214704691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607352330 + 607352331.

It is an arithmetic number, because the mean of its divisors is an integer number (607352331).

Almost surely, 2^1214704661 is an apocalyptic number.

It is an amenable number.

1214704661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214704661 is an equidigital number, since it uses as much as digits as its factorization.

1214704661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1214704661 is about 34852.6134027278. The cubic root of 1214704661 is about 1066.9815243149.

Adding to 1214704661 its reverse (1664074121), we get a palindrome (2878778782).

The spelling of 1214704661 in words is "one billion, two hundred fourteen million, seven hundred four thousand, six hundred sixty-one".