63070421 has 4 divisors (see below), whose sum is σ = 63353472. Its totient is φ = 62787372.

The previous prime is 63070411. The next prime is 63070429. The reversal of 63070421 is 12407036.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63070421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63070429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141191 + ... + 141636.

It is an arithmetic number, because the mean of its divisors is an integer number (15838368).

Almost surely, 2^63070421 is an apocalyptic number.

It is an amenable number.

63070421 is a deficient number, since it is larger than the sum of its proper divisors (283051).

63070421 is a wasteful number, since it uses less digits than its factorization.

63070421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283050.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 63070421 is about 7941.6888002490. The cubic root of 63070421 is about 398.0539244124.

Adding to 63070421 its reverse (12407036), we get a palindrome (75477457).

The spelling of 63070421 in words is "sixty-three million, seventy thousand, four hundred twenty-one".