648905541 has 16 divisors (see below), whose sum is σ = 891942720. Its totient is φ = 419437440.

The previous prime is 648905533. The next prime is 648905549. The reversal of 648905541 is 145509846.

It is an interprime number because it is at equal distance from previous prime (648905533) and next prime (648905549).

It is not a de Polignac number, because 648905541 - 2³ = 648905533 is a prime.

It is a super-2 number, since 2×648905541² = 842156802281005362, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 648905493 and 648905502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648905549) 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, 12190 + ... + 38031.

It is an arithmetic number, because the mean of its divisors is an integer number (55746420).

Almost surely, 2^648905541 is an apocalyptic number.

It is an amenable number.

648905541 is a deficient number, since it is larger than the sum of its proper divisors (243037179).

648905541 is a wasteful number, since it uses less digits than its factorization.

648905541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50356.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 648905541 is about 25473.6244182095. The cubic root of 648905541 is about 865.7526459593.

The spelling of 648905541 in words is "six hundred forty-eight million, nine hundred five thousand, five hundred forty-one".