647558954 has 16 divisors (see below), whose sum is σ = 1111408128. Its totient is φ = 277198512.

The previous prime is 647558921. The next prime is 647558957. The reversal of 647558954 is 459855746.

It is a junction number, because it is equal to n+sod(n) for n = 647558896 and 647558905.

It is not an unprimeable number, because it can be changed into a prime (647558957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14717 + ... + 38880.

It is an arithmetic number, because the mean of its divisors is an integer number (69463008).

Almost surely, 2^647558954 is an apocalyptic number.

647558954 is a deficient number, since it is larger than the sum of its proper divisors (463849174).

647558954 is a wasteful number, since it uses less digits than its factorization.

647558954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54469.

The product of its digits is 6048000, while the sum is 53.

The square root of 647558954 is about 25447.1796865586. The cubic root of 647558954 is about 865.1533709580.

The spelling of 647558954 in words is "six hundred forty-seven million, five hundred fifty-eight thousand, nine hundred fifty-four".