495681 has 8 divisors (see below), whose sum is σ = 666624. Its totient is φ = 327600.

The previous prime is 495679. The next prime is 495701. The reversal of 495681 is 186594.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 495681 - 2¹ = 495679 is a prime.

It is a super-2 number, since 2×495681² = 491399307522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (495611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270 + ... + 1031.

It is an arithmetic number, because the mean of its divisors is an integer number (83328).

2⁴⁹⁵⁶⁸¹ is an apocalyptic number.

It is an amenable number.

495681 is a deficient number, since it is larger than the sum of its proper divisors (170943).

495681 is a wasteful number, since it uses less digits than its factorization.

495681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431.

The product of its digits is 8640, while the sum is 33.

The square root of 495681 is about 704.0461632592. The cubic root of 495681 is about 79.1408585620.

It can be divided in two parts, 495 and 681, that added together give a triangular number (1176 = T₄₈).

The spelling of 495681 in words is "four hundred ninety-five thousand, six hundred eighty-one".