648370501 has 2 divisors, whose sum is σ = 648370502. Its totient is φ = 648370500.

The previous prime is 648370441. The next prime is 648370507. The reversal of 648370501 is 105073846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 405821025 + 242549476 = 20145^2 + 15574^2 .

It is a cyclic number.

It is not a de Polignac number, because 648370501 - 2⁹ = 648369989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648370507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324185250 + 324185251.

It is an arithmetic number, because the mean of its divisors is an integer number (324185251).

Almost surely, 2^648370501 is an apocalyptic number.

It is an amenable number.

648370501 is a deficient number, since it is larger than the sum of its proper divisors (1).

648370501 is an equidigital number, since it uses as much as digits as its factorization.

648370501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 648370501 is about 25463.1204097220. The cubic root of 648370501 is about 865.5146351163.

The spelling of 648370501 in words is "six hundred forty-eight million, three hundred seventy thousand, five hundred one".