612270091 has 2 divisors, whose sum is σ = 612270092. Its totient is φ = 612270090.

The previous prime is 612270089. The next prime is 612270103. The reversal of 612270091 is 190072216.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612270091 - 2¹ = 612270089 is a prime.

Together with 612270089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (612273091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306135045 + 306135046.

It is an arithmetic number, because the mean of its divisors is an integer number (306135046).

Almost surely, 2^612270091 is an apocalyptic number.

612270091 is a deficient number, since it is larger than the sum of its proper divisors (1).

612270091 is an equidigital number, since it uses as much as digits as its factorization.

612270091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 612270091 is about 24744.0920423442. The cubic root of 612270091 is about 849.1433542476.

The spelling of 612270091 in words is "six hundred twelve million, two hundred seventy thousand, ninety-one".