63673501 has 2 divisors, whose sum is σ = 63673502. Its totient is φ = 63673500.

The previous prime is 63673487. The next prime is 63673507. The reversal of 63673501 is 10537636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59305401 + 4368100 = 7701^2 + 2090^2 .

It is a cyclic number.

It is not a de Polignac number, because 63673501 - 2¹¹ = 63671453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63673507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31836750 + 31836751.

It is an arithmetic number, because the mean of its divisors is an integer number (31836751).

Almost surely, 2^63673501 is an apocalyptic number.

It is an amenable number.

63673501 is a deficient number, since it is larger than the sum of its proper divisors (1).

63673501 is an equidigital number, since it uses as much as digits as its factorization.

63673501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 63673501 is about 7979.5677201212. The cubic root of 63673501 is about 399.3186337591.

The spelling of 63673501 in words is "sixty-three million, six hundred seventy-three thousand, five hundred one".