1642463 has 2 divisors, whose sum is σ = 1642464. Its totient is φ = 1642462.

The previous prime is 1642451. The next prime is 1642481. The reversal of 1642463 is 3642461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1642463 - 2⁴ = 1642447 is a prime.

It is a zygodrome in base 6.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1642423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821231 + 821232.

It is an arithmetic number, because the mean of its divisors is an integer number (821232).

2^1642463 is an apocalyptic number.

1642463 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642463 is an equidigital number, since it uses as much as digits as its factorization.

1642463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

The square root of 1642463 is about 1281.5861266415. The cubic root of 1642463 is about 117.9863768626.

The spelling of 1642463 in words is "one million, six hundred forty-two thousand, four hundred sixty-three".