651698485 has 24 divisors (see below), whose sum is σ = 848915208. Its totient is φ = 478617600.

The previous prime is 651698473. The next prime is 651698503. The reversal of 651698485 is 584896156.

It can be written as a sum of positive squares in 12 ways, for example, as 439908676 + 211789809 = 20974^2 + 14553^2 .

It is not a de Polignac number, because 651698485 - 2⁷ = 651698357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140605 + ... + 145165.

It is an arithmetic number, because the mean of its divisors is an integer number (35371467).

Almost surely, 2^651698485 is an apocalyptic number.

It is an amenable number.

651698485 is a deficient number, since it is larger than the sum of its proper divisors (197216723).

651698485 is a wasteful number, since it uses less digits than its factorization.

651698485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4665 (or 4624 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 52.

The square root of 651698485 is about 25528.3858675005. The cubic root of 651698485 is about 866.9929589103.

The spelling of 651698485 in words is "six hundred fifty-one million, six hundred ninety-eight thousand, four hundred eighty-five".