647654955 has 16 divisors (see below), whose sum is σ = 1040700960. Its totient is φ = 343931648.

The previous prime is 647654947. The next prime is 647654981. The reversal of 647654955 is 559456746.

It is a cyclic number.

It is not a de Polignac number, because 647654955 - 2³ = 647654947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 647654898 and 647654907.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89160 + ... + 96149.

It is an arithmetic number, because the mean of its divisors is an integer number (65043810).

Almost surely, 2^647654955 is an apocalyptic number.

647654955 is a deficient number, since it is larger than the sum of its proper divisors (393046005).

647654955 is a wasteful number, since it uses less digits than its factorization.

647654955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185550.

The product of its digits is 4536000, while the sum is 51.

The square root of 647654955 is about 25449.0658964136. The cubic root of 647654955 is about 865.1961220127.

The spelling of 647654955 in words is "six hundred forty-seven million, six hundred fifty-four thousand, nine hundred fifty-five".