1214666345 has 16 divisors (see below), whose sum is σ = 1479846672. Its totient is φ = 956943360.

The previous prime is 1214666339. The next prime is 1214666347. The reversal of 1214666345 is 5436664121.

It can be written as a sum of positive squares in 8 ways, for example, as 156075049 + 1058591296 = 12493^2 + 32536^2 .

It is not a de Polignac number, because 1214666345 - 2¹⁶ = 1214600809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1214666299 and 1214666308.

It is not an unprimeable number, because it can be changed into a prime (1214666347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275579 + ... + 279951.

It is an arithmetic number, because the mean of its divisors is an integer number (92490417).

Almost surely, 2^1214666345 is an apocalyptic number.

It is an amenable number.

1214666345 is a deficient number, since it is larger than the sum of its proper divisors (265180327).

1214666345 is an equidigital number, since it uses as much as digits as its factorization.

1214666345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5212.

The product of its digits is 103680, while the sum is 38.

The square root of 1214666345 is about 34852.0637122108. The cubic root of 1214666345 is about 1066.9703054304.

The spelling of 1214666345 in words is "one billion, two hundred fourteen million, six hundred sixty-six thousand, three hundred forty-five".