490268761 has 4 divisors (see below), whose sum is σ = 516072400. Its totient is φ = 464465124.

The previous prime is 490268731. The next prime is 490268771. The reversal of 490268761 is 167862094.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490268761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490268731) 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, 12901791 + ... + 12901828.

It is an arithmetic number, because the mean of its divisors is an integer number (129018100).

Almost surely, 2^490268761 is an apocalyptic number.

It is an amenable number.

490268761 is a deficient number, since it is larger than the sum of its proper divisors (25803639).

490268761 is a wasteful number, since it uses less digits than its factorization.

490268761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25803638.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 490268761 is about 22142.0134811629. The cubic root of 490268761 is about 788.5176287782.

The spelling of 490268761 in words is "four hundred ninety million, two hundred sixty-eight thousand, seven hundred sixty-one".