651616127 has 2 divisors, whose sum is σ = 651616128. Its totient is φ = 651616126.

The previous prime is 651616117. The next prime is 651616129. The reversal of 651616127 is 721616156.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 651616127 - 2⁸ = 651615871 is a prime.

Together with 651616129, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651616129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325808063 + 325808064.

It is an arithmetic number, because the mean of its divisors is an integer number (325808064).

Almost surely, 2^651616127 is an apocalyptic number.

651616127 is a deficient number, since it is larger than the sum of its proper divisors (1).

651616127 is an equidigital number, since it uses as much as digits as its factorization.

651616127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 651616127 is about 25526.7727494096. The cubic root of 651616127 is about 866.9564354690.

The spelling of 651616127 in words is "six hundred fifty-one million, six hundred sixteen thousand, one hundred twenty-seven".