6625394 has 4 divisors (see below), whose sum is σ = 9938094. Its totient is φ = 3312696.

The previous prime is 6625387. The next prime is 6625417. The reversal of 6625394 is 4935266.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5880625 + 744769 = 2425^2 + 863^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1656347 + ... + 1656350.

Almost surely, 2^6625394 is an apocalyptic number.

6625394 is a deficient number, since it is larger than the sum of its proper divisors (3312700).

6625394 is a wasteful number, since it uses less digits than its factorization.

6625394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312699.

The product of its digits is 38880, while the sum is 35.

The square root of 6625394 is about 2573.9840714348. The cubic root of 6625394 is about 187.8180108488.

The spelling of 6625394 in words is "six million, six hundred twenty-five thousand, three hundred ninety-four".