651604367 has 2 divisors, whose sum is σ = 651604368. Its totient is φ = 651604366.

The previous prime is 651604363. The next prime is 651604391. The reversal of 651604367 is 763406156.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 651604367 - 2² = 651604363 is a prime.

It is equal to p_33872564 and since 651604367 and 33872564 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 651604367.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651604363) 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 as a sum of consecutive naturals, namely, 325802183 + 325802184.

It is an arithmetic number, because the mean of its divisors is an integer number (325802184).

Almost surely, 2^651604367 is an apocalyptic number.

651604367 is a deficient number, since it is larger than the sum of its proper divisors (1).

651604367 is an equidigital number, since it uses as much as digits as its factorization.

651604367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 651604367 is about 25526.5424019784. The cubic root of 651604367 is about 866.9512199908.

The spelling of 651604367 in words is "six hundred fifty-one million, six hundred four thousand, three hundred sixty-seven".