651345487 has 16 divisors (see below), whose sum is σ = 738823680. Its totient is φ = 569698272.

The previous prime is 651345473. The next prime is 651345509. The reversal of 651345487 is 784543156.

It is not a de Polignac number, because 651345487 - 2¹¹ = 651343439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651345407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21814 + ... + 42172.

It is an arithmetic number, because the mean of its divisors is an integer number (46176480).

Almost surely, 2^651345487 is an apocalyptic number.

651345487 is a deficient number, since it is larger than the sum of its proper divisors (87478193).

651345487 is a wasteful number, since it uses less digits than its factorization.

651345487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20502.

The product of its digits is 403200, while the sum is 43.

The square root of 651345487 is about 25521.4710978815. The cubic root of 651345487 is about 866.8363926138.

The spelling of 651345487 in words is "six hundred fifty-one million, three hundred forty-five thousand, four hundred eighty-seven".