63421075 has 6 divisors (see below), whose sum is σ = 78642164. Its totient is φ = 50736840.

The previous prime is 63421063. The next prime is 63421079. The reversal of 63421075 is 57012436.

It is not a de Polignac number, because 63421075 - 2¹³ = 63412883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63421079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1268397 + ... + 1268446.

Almost surely, 2^63421075 is an apocalyptic number.

63421075 is a deficient number, since it is larger than the sum of its proper divisors (15221089).

63421075 is a wasteful number, since it uses less digits than its factorization.

63421075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536853 (or 2536848 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 63421075 is about 7963.7349905682. The cubic root of 63421075 is about 398.7902512081.

The spelling of 63421075 in words is "sixty-three million, four hundred twenty-one thousand, seventy-five".