647070945 has 16 divisors (see below), whose sum is σ = 1035641472. Its totient is φ = 344995200.

The previous prime is 647070901. The next prime is 647070953. The reversal of 647070945 is 549070746.

It is not a de Polignac number, because 647070945 - 2⁹ = 647070433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 647070897 and 647070906.

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, 69909 + ... + 78621.

It is an arithmetic number, because the mean of its divisors is an integer number (64727592).

Almost surely, 2^647070945 is an apocalyptic number.

It is an amenable number.

647070945 is a deficient number, since it is larger than the sum of its proper divisors (388570527).

647070945 is a wasteful number, since it uses less digits than its factorization.

647070945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13672.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 647070945 is about 25437.5892136028. The cubic root of 647070945 is about 864.9359859964.

The spelling of 647070945 in words is "six hundred forty-seven million, seventy thousand, nine hundred forty-five".