691463 has 2 divisors, whose sum is σ = 691464. Its totient is φ = 691462.

The previous prime is 691451. The next prime is 691489. The reversal of 691463 is 364196.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 691463 - 2⁶ = 691399 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 691463.

It is not a weakly prime, because it can be changed into another prime (691433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345731 + 345732.

It is an arithmetic number, because the mean of its divisors is an integer number (345732).

2⁶⁹¹⁴⁶³ is an apocalyptic number.

691463 is a deficient number, since it is larger than the sum of its proper divisors (1).

691463 is an equidigital number, since it uses as much as digits as its factorization.

691463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 29.

The square root of 691463 is about 831.5425425076. The cubic root of 691463 is about 88.4279686690.

The spelling of 691463 in words is "six hundred ninety-one thousand, four hundred sixty-three".