261463 has 2 divisors, whose sum is σ = 261464. Its totient is φ = 261462.

The previous prime is 261451. The next prime is 261467. The reversal of 261463 is 364162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261463 - 2⁵ = 261431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130731 + 130732.

It is an arithmetic number, because the mean of its divisors is an integer number (130732).

2²⁶¹⁴⁶³ is an apocalyptic number.

261463 is a deficient number, since it is larger than the sum of its proper divisors (1).

261463 is an equidigital number, since it uses as much as digits as its factorization.

261463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

The square root of 261463 is about 511.3345284645. The cubic root of 261463 is about 63.9445320186.

The spelling of 261463 in words is "two hundred sixty-one thousand, four hundred sixty-three".