634223677 has 2 divisors, whose sum is σ = 634223678. Its totient is φ = 634223676.

The previous prime is 634223663. The next prime is 634223719. The reversal of 634223677 is 776322436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 478996996 + 155226681 = 21886^2 + 12459^2 .

It is a cyclic number.

It is not a de Polignac number, because 634223677 - 2¹⁹ = 633699389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634223647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317111838 + 317111839.

It is an arithmetic number, because the mean of its divisors is an integer number (317111839).

Almost surely, 2^634223677 is an apocalyptic number.

It is an amenable number.

634223677 is a deficient number, since it is larger than the sum of its proper divisors (1).

634223677 is an equidigital number, since it uses as much as digits as its factorization.

634223677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 40.

The square root of 634223677 is about 25183.7979065907. The cubic root of 634223677 is about 859.1733886272.

The spelling of 634223677 in words is "six hundred thirty-four million, two hundred twenty-three thousand, six hundred seventy-seven".