658680497 has 4 divisors (see below), whose sum is σ = 659432436. Its totient is φ = 657928560.

The previous prime is 658680461. The next prime is 658680511. The reversal of 658680497 is 794086856.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 558660496 + 100020001 = 23636^2 + 10001^2 .

It is a cyclic number.

It is not a de Polignac number, because 658680497 - 2²⁴ = 641903281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (658680427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374654 + ... + 376407.

It is an arithmetic number, because the mean of its divisors is an integer number (164858109).

Almost surely, 2^658680497 is an apocalyptic number.

It is an amenable number.

658680497 is a deficient number, since it is larger than the sum of its proper divisors (751939).

658680497 is an equidigital number, since it uses as much as digits as its factorization.

658680497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751938.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The square root of 658680497 is about 25664.7715166140. The cubic root of 658680497 is about 870.0781613839.

The spelling of 658680497 in words is "six hundred fifty-eight million, six hundred eighty thousand, four hundred ninety-seven".