490864698 has 80 divisors (see below), whose sum is σ = 1174002984. Its totient is φ = 152755200.

The previous prime is 490864697. The next prime is 490864711. The reversal of 490864698 is 896468094.

490864698 is a `hidden beast` number, since 490 + 8 + 64 + 6 + 98 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 346071609 + 144793089 = 18603^2 + 12033^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (490864697) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 376648 + ... + 377948.

Almost surely, 2^490864698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 490864698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (587001492).

490864698 is an abundant number, since it is smaller than the sum of its proper divisors (683138286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

490864698 is a wasteful number, since it uses less digits than its factorization.

490864698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469 (or 1460 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 490864698 is about 22155.4665489129. The cubic root of 490864698 is about 788.8369886889.

The spelling of 490864698 in words is "four hundred ninety million, eight hundred sixty-four thousand, six hundred ninety-eight".