63684001 has 2 divisors, whose sum is σ = 63684002. Its totient is φ = 63684000.

The previous prime is 63683933. The next prime is 63684031. The reversal of 63684001 is 10048636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52635025 + 11048976 = 7255^2 + 3324^2 .

It is a cyclic number.

It is not a de Polignac number, because 63684001 - 2¹¹ = 63681953 is a prime.

It is not a weakly prime, because it can be changed into another prime (63684031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31842000 + 31842001.

It is an arithmetic number, because the mean of its divisors is an integer number (31842001).

Almost surely, 2^63684001 is an apocalyptic number.

It is an amenable number.

63684001 is a deficient number, since it is larger than the sum of its proper divisors (1).

63684001 is an equidigital number, since it uses as much as digits as its factorization.

63684001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 63684001 is about 7980.2256233768. The cubic root of 63684001 is about 399.3405822680.

The spelling of 63684001 in words is "sixty-three million, six hundred eighty-four thousand, one".