63840701 has 2 divisors, whose sum is σ = 63840702. Its totient is φ = 63840700.

The previous prime is 63840683. The next prime is 63840757. The reversal of 63840701 is 10704836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55279225 + 8561476 = 7435^2 + 2926^2 .

It is a cyclic number.

It is not a de Polignac number, because 63840701 - 2¹⁴ = 63824317 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63840761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31920350 + 31920351.

It is an arithmetic number, because the mean of its divisors is an integer number (31920351).

Almost surely, 2^63840701 is an apocalyptic number.

It is an amenable number.

63840701 is a deficient number, since it is larger than the sum of its proper divisors (1).

63840701 is an equidigital number, since it uses as much as digits as its factorization.

63840701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 63840701 is about 7990.0376094234. The cubic root of 63840701 is about 399.6678513529.

The spelling of 63840701 in words is "sixty-three million, eight hundred forty thousand, seven hundred one".