647028051 has 8 divisors (see below), whose sum is σ = 866142144. Its totient is φ = 429633000.

The previous prime is 647028047. The next prime is 647028073. The reversal of 647028051 is 150820746.

647028051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 647028051 - 2² = 647028047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (647024051) 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, 428881 + ... + 430386.

It is an arithmetic number, because the mean of its divisors is an integer number (108267768).

Almost surely, 2^647028051 is an apocalyptic number.

647028051 is a deficient number, since it is larger than the sum of its proper divisors (219114093).

647028051 is a wasteful number, since it uses less digits than its factorization.

647028051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859521.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 647028051 is about 25436.7460772796. The cubic root of 647028051 is about 864.9168735203.

Adding to 647028051 its reverse (150820746), we get a palindrome (797848797).

The spelling of 647028051 in words is "six hundred forty-seven million, twenty-eight thousand, fifty-one".