647343025 has 12 divisors (see below), whose sum is σ = 917377792. Its totient is φ = 443892240.

The previous prime is 647343019. The next prime is 647343029. The reversal of 647343025 is 520343746.

It is not a de Polignac number, because 647343025 - 2¹³ = 647334833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647343029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1849377 + ... + 1849726.

Almost surely, 2^647343025 is an apocalyptic number.

It is an amenable number.

647343025 is a deficient number, since it is larger than the sum of its proper divisors (270034767).

647343025 is a wasteful number, since it uses less digits than its factorization.

647343025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699120 (or 3699115 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 34.

The square root of 647343025 is about 25442.9366426126. The cubic root of 647343025 is about 865.0571982625.

The spelling of 647343025 in words is "six hundred forty-seven million, three hundred forty-three thousand, twenty-five".