647077009 has 8 divisors (see below), whose sum is σ = 682174080. Its totient is φ = 612560256.

The previous prime is 647076973. The next prime is 647077019. The reversal of 647077009 is 900770746.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 647077009 - 2⁹ = 647076497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647077019) 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 7 ways as a sum of consecutive naturals, for example, 142789 + ... + 147250.

It is an arithmetic number, because the mean of its divisors is an integer number (85271760).

Almost surely, 2^647077009 is an apocalyptic number.

It is an amenable number.

647077009 is a deficient number, since it is larger than the sum of its proper divisors (35097071).

647077009 is a wasteful number, since it uses less digits than its factorization.

647077009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290159.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 647077009 is about 25437.7084070087. The cubic root of 647077009 is about 864.9386878925.

The spelling of 647077009 in words is "six hundred forty-seven million, seventy-seven thousand, nine".