1372207217 has 2 divisors, whose sum is σ = 1372207218. Its totient is φ = 1372207216.

The previous prime is 1372207201. The next prime is 1372207279. The reversal of 1372207217 is 7127022731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1348431841 + 23775376 = 36721^2 + 4876^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372207217 - 2⁴ = 1372207201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1372204217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686103608 + 686103609.

It is an arithmetic number, because the mean of its divisors is an integer number (686103609).

Almost surely, 2^1372207217 is an apocalyptic number.

It is an amenable number.

1372207217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372207217 is an equidigital number, since it uses as much as digits as its factorization.

1372207217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 1372207217 is about 37043.3154158750. The cubic root of 1372207217 is about 1111.2366751405.

Adding to 1372207217 its reverse (7127022731), we get a palindrome (8499229948).

The spelling of 1372207217 in words is "one billion, three hundred seventy-two million, two hundred seven thousand, two hundred seventeen".