648145841 has 16 divisors (see below), whose sum is σ = 780748800. Its totient is φ = 525622608.

The previous prime is 648145811. The next prime is 648145843. The reversal of 648145841 is 148541846.

It is a happy number.

It is not a de Polignac number, because 648145841 - 2¹⁸ = 647883697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (648145843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114680 + ... + 120198.

It is an arithmetic number, because the mean of its divisors is an integer number (48796800).

Almost surely, 2^648145841 is an apocalyptic number.

It is an amenable number.

648145841 is a deficient number, since it is larger than the sum of its proper divisors (132602959).

648145841 is a wasteful number, since it uses less digits than its factorization.

648145841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6428.

The product of its digits is 122880, while the sum is 41.

The square root of 648145841 is about 25458.7085493353. The cubic root of 648145841 is about 865.4146567961.

The spelling of 648145841 in words is "six hundred forty-eight million, one hundred forty-five thousand, eight hundred forty-one".