648347041 has 4 divisors (see below), whose sum is σ = 665869972. Its totient is φ = 630824112.

The previous prime is 648347027. The next prime is 648347053. The reversal of 648347041 is 140743846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 140743846 = 2 ⋅70371923.

It can be written as a sum of positive squares in 2 ways, for example, as 302238225 + 346108816 = 17385^2 + 18604^2 .

It is a cyclic number.

It is not a de Polignac number, because 648347041 - 2⁵ = 648347009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 17522893 = 648347041 / (6 + 4 + 8 + 3 + 4 + 7 + 0 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648347081) 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, 8761410 + ... + 8761483.

It is an arithmetic number, because the mean of its divisors is an integer number (166467493).

Almost surely, 2^648347041 is an apocalyptic number.

It is an amenable number.

648347041 is a deficient number, since it is larger than the sum of its proper divisors (17522931).

648347041 is a wasteful number, since it uses less digits than its factorization.

648347041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17522930.

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 648347041 is about 25462.6597393124. The cubic root of 648347041 is about 865.5041960139.

The spelling of 648347041 in words is "six hundred forty-eight million, three hundred forty-seven thousand, forty-one".