62643421 has 4 divisors (see below), whose sum is σ = 65367072. Its totient is φ = 59919772.

The previous prime is 62643397. The next prime is 62643431. The reversal of 62643421 is 12434626.

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-62643421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 62643421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (62643431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1361791 + ... + 1361836.

It is an arithmetic number, because the mean of its divisors is an integer number (16341768).

Almost surely, 2^62643421 is an apocalyptic number.

It is an amenable number.

62643421 is a deficient number, since it is larger than the sum of its proper divisors (2723651).

62643421 is a wasteful number, since it uses less digits than its factorization.

62643421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723650.

The product of its digits is 6912, while the sum is 28.

The square root of 62643421 is about 7914.7596931303. The cubic root of 62643421 is about 397.1535866227.

The spelling of 62643421 in words is "sixty-two million, six hundred forty-three thousand, four hundred twenty-one".