651772265 has 16 divisors (see below), whose sum is σ = 845759232. Its totient is φ = 480301824.

The previous prime is 651772249. The next prime is 651772273. The reversal of 651772265 is 562277156.

It is a cyclic number.

It is not a de Polignac number, because 651772265 - 2⁴ = 651772249 is a prime.

It is a Duffinian number.

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, 77579 + ... + 85568.

It is an arithmetic number, because the mean of its divisors is an integer number (52859952).

Almost surely, 2^651772265 is an apocalyptic number.

It is an amenable number.

651772265 is a deficient number, since it is larger than the sum of its proper divisors (193986967).

651772265 is a wasteful number, since it uses less digits than its factorization.

651772265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163216.

The product of its digits is 176400, while the sum is 41.

The square root of 651772265 is about 25529.8308846729. The cubic root of 651772265 is about 867.0256756386.

The spelling of 651772265 in words is "six hundred fifty-one million, seven hundred seventy-two thousand, two hundred sixty-five".