63007421 has 4 divisors (see below), whose sum is σ = 63024192. Its totient is φ = 62990652.

The previous prime is 63007369. The next prime is 63007429. The reversal of 63007421 is 12470036.

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 not a de Polignac number, because 63007421 - 2¹⁴ = 62991037 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 (63007429) 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, 140 + ... + 11226.

It is an arithmetic number, because the mean of its divisors is an integer number (15756048).

Almost surely, 2^63007421 is an apocalyptic number.

It is an amenable number.

63007421 is a deficient number, since it is larger than the sum of its proper divisors (16771).

63007421 is a wasteful number, since it uses less digits than its factorization.

63007421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16770.

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

The square root of 63007421 is about 7937.7213984871. The cubic root of 63007421 is about 397.9213437654.

Adding to 63007421 its reverse (12470036), we get a palindrome (75477457).

The spelling of 63007421 in words is "sixty-three million, seven thousand, four hundred twenty-one".