1206533897 has 2 divisors, whose sum is σ = 1206533898. Its totient is φ = 1206533896.

The previous prime is 1206533891. The next prime is 1206533957. The reversal of 1206533897 is 7983356021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1178960896 + 27573001 = 34336^2 + 5251^2 .

It is a cyclic number.

It is not a de Polignac number, because 1206533897 - 2⁸ = 1206533641 is a prime.

It is a super-2 number, since 2×1206533897² = 2911448089220013218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1206533891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603266948 + 603266949.

It is an arithmetic number, because the mean of its divisors is an integer number (603266949).

Almost surely, 2^1206533897 is an apocalyptic number.

It is an amenable number.

1206533897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206533897 is an equidigital number, since it uses as much as digits as its factorization.

1206533897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 1206533897 is about 34735.1968038185. The cubic root of 1206533897 is about 1064.5837741064.

The spelling of 1206533897 in words is "one billion, two hundred six million, five hundred thirty-three thousand, eight hundred ninety-seven".