651487065 has 16 divisors (see below), whose sum is σ = 1046260800. Its totient is φ = 346165952.

The previous prime is 651487061. The next prime is 651487087. The reversal of 651487065 is 560784156.

It is a cyclic number.

It is not a de Polignac number, because 651487065 - 2² = 651487061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (651487061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76695 + ... + 84764.

It is an arithmetic number, because the mean of its divisors is an integer number (65391300).

Almost surely, 2^651487065 is an apocalyptic number.

It is an amenable number.

651487065 is a deficient number, since it is larger than the sum of its proper divisors (394773735).

651487065 is a wasteful number, since it uses less digits than its factorization.

651487065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161736.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 651487065 is about 25524.2446509196. The cubic root of 651487065 is about 866.8991939353.

The spelling of 651487065 in words is "six hundred fifty-one million, four hundred eighty-seven thousand, sixty-five".