63651065 has 12 divisors (see below), whose sum is σ = 78300012. Its totient is φ = 49672320.

The previous prime is 63651047. The next prime is 63651073. The reversal of 63651065 is 56015636.

It can be written as a sum of positive squares in 6 ways, for example, as 4376464 + 59274601 = 2092^2 + 7699^2 .

It is not a de Polignac number, because 63651065 - 2⁶ = 63651001 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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 (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4619 + ... + 12191.

It is an arithmetic number, because the mean of its divisors is an integer number (6525001).

Almost surely, 2^63651065 is an apocalyptic number.

It is an amenable number.

63651065 is a deficient number, since it is larger than the sum of its proper divisors (14648947).

63651065 is an equidigital number, since it uses as much as digits as its factorization.

63651065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7660 (or 7619 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 63651065 is about 7978.1617556928. The cubic root of 63651065 is about 399.2717269339.

The spelling of 63651065 in words is "sixty-three million, six hundred fifty-one thousand, sixty-five".