688357463 has 2 divisors, whose sum is σ = 688357464. Its totient is φ = 688357462.

The previous prime is 688357451. The next prime is 688357469. The reversal of 688357463 is 364753886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 688357463 - 2¹⁸ = 688095319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (688357469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344178731 + 344178732.

It is an arithmetic number, because the mean of its divisors is an integer number (344178732).

Almost surely, 2^688357463 is an apocalyptic number.

688357463 is a deficient number, since it is larger than the sum of its proper divisors (1).

688357463 is an equidigital number, since it uses as much as digits as its factorization.

688357463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 50.

The square root of 688357463 is about 26236.5672868994. The cubic root of 688357463 is about 882.9538578246.

It can be divided in two parts, 6883 and 57463, that added together give a palindrome (64346).

The spelling of 688357463 in words is "six hundred eighty-eight million, three hundred fifty-seven thousand, four hundred sixty-three".