490619661 has 16 divisors (see below), whose sum is σ = 749113344. Its totient is φ = 279790704.

The previous prime is 490619639. The next prime is 490619683. The reversal of 490619661 is 166916094.

It is an interprime number because it is at equal distance from previous prime (490619639) and next prime (490619683).

It is not a de Polignac number, because 490619661 - 2⁵ = 490619629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490619461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12661 + ... + 33786.

It is an arithmetic number, because the mean of its divisors is an integer number (46819584).

Almost surely, 2^490619661 is an apocalyptic number.

It is an amenable number.

490619661 is a deficient number, since it is larger than the sum of its proper divisors (258493683).

490619661 is a wasteful number, since it uses less digits than its factorization.

490619661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46960.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 490619661 is about 22149.9359141285. The cubic root of 490619661 is about 788.7057057897.

The spelling of 490619661 in words is "four hundred ninety million, six hundred nineteen thousand, six hundred sixty-one".