651265065 has 48 divisors (see below), whose sum is σ = 1245404160. Its totient is φ = 312195840.

The previous prime is 651265063. The next prime is 651265067. The reversal of 651265065 is 560562156.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (651265063) and next prime (651265067).

It is not a de Polignac number, because 651265065 - 2¹ = 651265063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (651265063) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36664 + ... + 51446.

It is an arithmetic number, because the mean of its divisors is an integer number (25945920).

Almost surely, 2^651265065 is an apocalyptic number.

It is an amenable number.

651265065 is a deficient number, since it is larger than the sum of its proper divisors (594139095).

651265065 is a wasteful number, since it uses less digits than its factorization.

651265065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14894 (or 14891 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 651265065 is about 25519.8954739239. The cubic root of 651265065 is about 866.8007148836.

The spelling of 651265065 in words is "six hundred fifty-one million, two hundred sixty-five thousand, sixty-five".