647337041 has 4 divisors (see below), whose sum is σ = 697132212. Its totient is φ = 597541872.

The previous prime is 647337037. The next prime is 647337079. The reversal of 647337041 is 140733746.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 140733746 = 2 ⋅70366873.

It can be written as a sum of positive squares in 2 ways, for example, as 194881600 + 452455441 = 13960^2 + 21271^2 .

It is a cyclic number.

It is not a de Polignac number, because 647337041 - 2² = 647337037 is a prime.

It is a super-4 number, since 4×647337041⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 647336992 and 647337010.

It is not an unprimeable number, because it can be changed into a prime (647337641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24897566 + ... + 24897591.

It is an arithmetic number, because the mean of its divisors is an integer number (174283053).

Almost surely, 2^647337041 is an apocalyptic number.

It is an amenable number.

647337041 is a deficient number, since it is larger than the sum of its proper divisors (49795171).

647337041 is a wasteful number, since it uses less digits than its factorization.

647337041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49795170.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 647337041 is about 25442.8190458526. The cubic root of 647337041 is about 865.0545327421.

The spelling of 647337041 in words is "six hundred forty-seven million, three hundred thirty-seven thousand, forty-one".