63621049 has 2 divisors, whose sum is σ = 63621050. Its totient is φ = 63621048.

The previous prime is 63621007. The next prime is 63621071. The reversal of 63621049 is 94012636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61779600 + 1841449 = 7860^2 + 1357^2 .

It is a cyclic number.

It is not a de Polignac number, because 63621049 - 2⁹ = 63620537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63621049.

It is not a weakly prime, because it can be changed into another prime (63621079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31810524 + 31810525.

It is an arithmetic number, because the mean of its divisors is an integer number (31810525).

Almost surely, 2^63621049 is an apocalyptic number.

It is an amenable number.

63621049 is a deficient number, since it is larger than the sum of its proper divisors (1).

63621049 is an equidigital number, since it uses as much as digits as its factorization.

63621049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 63621049 is about 7976.2803987824. The cubic root of 63621049 is about 399.2089554024.

The spelling of 63621049 in words is "sixty-three million, six hundred twenty-one thousand, forty-nine".