492661 has 4 divisors (see below), whose sum is σ = 530572. Its totient is φ = 454752.

The previous prime is 492659. The next prime is 492671. The reversal of 492661 is 166294.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28900 + 463761 = 170^2 + 681^2 .

It is a cyclic number.

It is not a de Polignac number, because 492661 - 2¹ = 492659 is a prime.

It is a Duffinian number.

492661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (492601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18936 + ... + 18961.

It is an arithmetic number, because the mean of its divisors is an integer number (132643).

2⁴⁹²⁶⁶¹ is an apocalyptic number.

It is an amenable number.

492661 is a deficient number, since it is larger than the sum of its proper divisors (37911).

492661 is a wasteful number, since it uses less digits than its factorization.

492661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37910.

The product of its digits is 2592, while the sum is 28.

The square root of 492661 is about 701.8981407583. The cubic root of 492661 is about 78.9798057661.

It can be divided in two parts, 4 and 92661, that added together give a triangular number (92665 = T₄₃₀).

The spelling of 492661 in words is "four hundred ninety-two thousand, six hundred sixty-one".