612201061 has 2 divisors, whose sum is σ = 612201062. Its totient is φ = 612201060.

The previous prime is 612201017. The next prime is 612201089. The reversal of 612201061 is 160102216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309232225 + 302968836 = 17585^2 + 17406^2 .

It is a cyclic number.

It is not a de Polignac number, because 612201061 - 2¹¹ = 612199013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612201011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306100530 + 306100531.

It is an arithmetic number, because the mean of its divisors is an integer number (306100531).

Almost surely, 2^612201061 is an apocalyptic number.

It is an amenable number.

612201061 is a deficient number, since it is larger than the sum of its proper divisors (1).

612201061 is an equidigital number, since it uses as much as digits as its factorization.

612201061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 612201061 is about 24742.6971246063. The cubic root of 612201061 is about 849.1114410067. Note that the first 3 decimals are identical.

Adding to 612201061 its reverse (160102216), we get a palindrome (772303277).

The spelling of 612201061 in words is "six hundred twelve million, two hundred one thousand, sixty-one".