651610423 has 2 divisors, whose sum is σ = 651610424. Its totient is φ = 651610422.

The previous prime is 651610409. The next prime is 651610429. The reversal of 651610423 is 324016156.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 651610423 - 2⁹ = 651609911 is a prime.

It is a super-2 number, since 2×651610423² = 849192286724477858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 651610391 and 651610400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651610429) 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, 325805211 + 325805212.

It is an arithmetic number, because the mean of its divisors is an integer number (325805212).

Almost surely, 2^651610423 is an apocalyptic number.

651610423 is a deficient number, since it is larger than the sum of its proper divisors (1).

651610423 is an equidigital number, since it uses as much as digits as its factorization.

651610423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 651610423 is about 25526.6610233301. The cubic root of 651610423 is about 866.9539057925.

Adding to 651610423 its reverse (324016156), we get a palindrome (975626579).

The spelling of 651610423 in words is "six hundred fifty-one million, six hundred ten thousand, four hundred twenty-three".