497640780 has 576 divisors, whose sum is σ = 2065996800. Its totient is φ = 97044480.

The previous prime is 497640769. The next prime is 497640809. The reversal of 497640780 is 87046794.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 12137560 + ... + 12137600.

It is an arithmetic number, because the mean of its divisors is an integer number (3586800).

Almost surely, 2^497640780 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 497640780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1032998400).

497640780 is an abundant number, since it is smaller than the sum of its proper divisors (1568356020).

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

497640780 is a wasteful number, since it uses less digits than its factorization.

497640780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 497640780 is about 22307.8636359469. The cubic root of 497640780 is about 792.4502146410.

The spelling of 497640780 in words is "four hundred ninety-seven million, six hundred forty thousand, seven hundred eighty".