651466489 has 4 divisors (see below), whose sum is σ = 651566080. Its totient is φ = 651366900.

The previous prime is 651466481. The next prime is 651466493. The reversal of 651466489 is 984664156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 651466489 - 2³ = 651466481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (651466481) 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 3 ways as a sum of consecutive naturals, for example, 39237 + ... + 53314.

It is an arithmetic number, because the mean of its divisors is an integer number (162891520).

Almost surely, 2^651466489 is an apocalyptic number.

It is an amenable number.

651466489 is a deficient number, since it is larger than the sum of its proper divisors (99591).

651466489 is an equidigital number, since it uses as much as digits as its factorization.

651466489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99590.

The product of its digits is 1244160, while the sum is 49.

The square root of 651466489 is about 25523.8415799816. The cubic root of 651466489 is about 866.8900673762.

The spelling of 651466489 in words is "six hundred fifty-one million, four hundred sixty-six thousand, four hundred eighty-nine".