6420632 has 32 divisors (see below), whose sum is σ = 12927600. Its totient is φ = 2980224.

The previous prime is 6420599. The next prime is 6420683. The reversal of 6420632 is 2360246.

It is a junction number, because it is equal to n+sod(n) for n = 6420598 and 6420607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7658 + ... + 8454.

Almost surely, 2^6420632 is an apocalyptic number.

It is an amenable number.

6420632 is an abundant number, since it is smaller than the sum of its proper divisors (6506968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6420632 is a wasteful number, since it uses less digits than its factorization.

6420632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 6420632 is about 2533.8966040468. The cubic root of 6420632 is about 185.8628502965.

Adding to 6420632 its reverse (2360246), we get a palindrome (8780878).

The spelling of 6420632 in words is "six million, four hundred twenty thousand, six hundred thirty-two".