671575625737 has 2 divisors, whose sum is σ = 671575625738. Its totient is φ = 671575625736.

The previous prime is 671575625729. The next prime is 671575625761. The reversal of 671575625737 is 737526575176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 549223281216 + 122352344521 = 741096^2 + 349789^2 .

It is a cyclic number.

It is not a de Polignac number, because 671575625737 - 2³ = 671575625729 is a prime.

It is not a weakly prime, because it can be changed into another prime (671575625797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335787812868 + 335787812869.

It is an arithmetic number, because the mean of its divisors is an integer number (335787812869).

Almost surely, 2^671575625737 is an apocalyptic number.

It is an amenable number.

671575625737 is a deficient number, since it is larger than the sum of its proper divisors (1).

671575625737 is an equidigital number, since it uses as much as digits as its factorization.

671575625737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64827000, while the sum is 61.

The spelling of 671575625737 in words is "six hundred seventy-one billion, five hundred seventy-five million, six hundred twenty-five thousand, seven hundred thirty-seven".