647488441 has 16 divisors (see below), whose sum is σ = 703402560. Its totient is φ = 593982720.

The previous prime is 647488397. The next prime is 647488447. The reversal of 647488441 is 144884746.

It is a cyclic number.

It is not a de Polignac number, because 647488441 - 2⁷ = 647488313 is a prime.

It is a super-2 number, since 2×647488441² = 838482562457220962, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 647488391 and 647488400.

It is not an unprimeable number, because it can be changed into a prime (647488447) 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, 103690 + ... + 109756.

It is an arithmetic number, because the mean of its divisors is an integer number (43962660).

Almost surely, 2^647488441 is an apocalyptic number.

It is an amenable number.

647488441 is a deficient number, since it is larger than the sum of its proper divisors (55914119).

647488441 is a wasteful number, since it uses less digits than its factorization.

647488441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6264.

The product of its digits is 688128, while the sum is 46.

The square root of 647488441 is about 25445.7941711396. The cubic root of 647488441 is about 865.1219674985.

The spelling of 647488441 in words is "six hundred forty-seven million, four hundred eighty-eight thousand, four hundred forty-one".