497669820 has 96 divisors (see below), whose sum is σ = 1415479296. Its totient is φ = 130636800.

The previous prime is 497669813. The next prime is 497669839. The reversal of 497669820 is 28966794.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1836285 + ... + 1836555.

It is an arithmetic number, because the mean of its divisors is an integer number (14744576).

Almost surely, 2^497669820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 497669820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (707739648).

497669820 is an abundant number, since it is smaller than the sum of its proper divisors (917809476).

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

497669820 is a wasteful number, since it uses less digits than its factorization.

497669820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 497669820 is about 22308.5145180041. The cubic root of 497669820 is about 792.4656289100.

The spelling of 497669820 in words is "four hundred ninety-seven million, six hundred sixty-nine thousand, eight hundred twenty".