492740645 has 4 divisors (see below), whose sum is σ = 591288780. Its totient is φ = 394192512.

The previous prime is 492740641. The next prime is 492740669. The reversal of 492740645 is 546047294.

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 318051556 + 174689089 = 17834^2 + 13217^2 .

It is a cyclic number.

It is not a de Polignac number, because 492740645 - 2² = 492740641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (492740641) 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, 49274060 + ... + 49274069.

It is an arithmetic number, because the mean of its divisors is an integer number (147822195).

Almost surely, 2^492740645 is an apocalyptic number.

It is an amenable number.

492740645 is a deficient number, since it is larger than the sum of its proper divisors (98548135).

492740645 is an equidigital number, since it uses as much as digits as its factorization.

492740645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98548134.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 492740645 is about 22197.7621619838. The cubic root of 492740645 is about 789.8406157123.

The spelling of 492740645 in words is "four hundred ninety-two million, seven hundred forty thousand, six hundred forty-five".