490273661 has 8 divisors (see below), whose sum is σ = 493610400. Its totient is φ = 486943920.

The previous prime is 490273631. The next prime is 490273669. The reversal of 490273661 is 166372094.

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

It is a cyclic number.

It is not a de Polignac number, because 490273661 - 2¹⁴ = 490257277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490273669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273155 + ... + 274943.

It is an arithmetic number, because the mean of its divisors is an integer number (61701300).

Almost surely, 2^490273661 is an apocalyptic number.

It is an amenable number.

490273661 is a deficient number, since it is larger than the sum of its proper divisors (3336739).

490273661 is a wasteful number, since it uses less digits than its factorization.

490273661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3499.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 490273661 is about 22142.1241302636. The cubic root of 490273661 is about 788.5202557207.

The spelling of 490273661 in words is "four hundred ninety million, two hundred seventy-three thousand, six hundred sixty-one".