6620434 has 8 divisors (see below), whose sum is σ = 10172988. Its totient is φ = 3229440.

The previous prime is 6620423. The next prime is 6620441. The reversal of 6620434 is 4340266.

It can be written as a sum of positive squares in 2 ways, for example, as 6579225 + 41209 = 2565^2 + 203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6620399 and 6620408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40287 + ... + 40450.

Almost surely, 2^6620434 is an apocalyptic number.

6620434 is a deficient number, since it is larger than the sum of its proper divisors (3552554).

6620434 is a wasteful number, since it uses less digits than its factorization.

6620434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80780.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 6620434 is about 2573.0204041165. The cubic root of 6620434 is about 187.7711301198.

The spelling of 6620434 in words is "six million, six hundred twenty thousand, four hundred thirty-four".