497580721 has 32 divisors (see below), whose sum is σ = 599961600. Its totient is φ = 407592000.

The previous prime is 497580719. The next prime is 497580739. The reversal of 497580721 is 127085794.

It is a cyclic number.

It is not a de Polignac number, because 497580721 - 2¹ = 497580719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (497580751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 394590 + ... + 395848.

It is an arithmetic number, because the mean of its divisors is an integer number (18748800).

Almost surely, 2^497580721 is an apocalyptic number.

It is an amenable number.

497580721 is a deficient number, since it is larger than the sum of its proper divisors (102380879).

497580721 is a wasteful number, since it uses less digits than its factorization.

497580721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 497580721 is about 22306.5174556675. The cubic root of 497580721 is about 792.4183337581.

The spelling of 497580721 in words is "four hundred ninety-seven million, five hundred eighty thousand, seven hundred twenty-one".