671548937 has 2 divisors, whose sum is σ = 671548938. Its totient is φ = 671548936.

The previous prime is 671548921. The next prime is 671548957. The reversal of 671548937 is 739845176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515698681 + 155850256 = 22709^2 + 12484^2 .

It is a cyclic number.

It is not a de Polignac number, because 671548937 - 2⁴ = 671548921 is a prime.

It is not a weakly prime, because it can be changed into another prime (671548957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335774468 + 335774469.

It is an arithmetic number, because the mean of its divisors is an integer number (335774469).

Almost surely, 2^671548937 is an apocalyptic number.

It is an amenable number.

671548937 is a deficient number, since it is larger than the sum of its proper divisors (1).

671548937 is an equidigital number, since it uses as much as digits as its factorization.

671548937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 50.

The square root of 671548937 is about 25914.2612667234. The cubic root of 671548937 is about 875.7078080178.

The spelling of 671548937 in words is "six hundred seventy-one million, five hundred forty-eight thousand, nine hundred thirty-seven".