647132275 has 6 divisors (see below), whose sum is σ = 802444052. Its totient is φ = 517705800.

The previous prime is 647132249. The next prime is 647132309. The reversal of 647132275 is 572231746.

It is a happy number.

647132275 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 647132275 - 2²⁵ = 613577843 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12942621 + ... + 12942670.

Almost surely, 2^647132275 is an apocalyptic number.

647132275 is a deficient number, since it is larger than the sum of its proper divisors (155311777).

647132275 is a wasteful number, since it uses less digits than its factorization.

647132275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25885301 (or 25885296 counting only the distinct ones).

The product of its digits is 70560, while the sum is 37.

The square root of 647132275 is about 25438.7946844971. The cubic root of 647132275 is about 864.9633116184.

The spelling of 647132275 in words is "six hundred forty-seven million, one hundred thirty-two thousand, two hundred seventy-five".