6634398 has 16 divisors (see below), whose sum is σ = 13295376. Its totient is φ = 2207040.

The previous prime is 6634391. The next prime is 6634423. The reversal of 6634398 is 8934366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6634391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3840 + ... + 5292.

It is an arithmetic number, because the mean of its divisors is an integer number (830961).

Almost surely, 2^6634398 is an apocalyptic number.

6634398 is an abundant number, since it is smaller than the sum of its proper divisors (6660978).

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

6634398 is a wasteful number, since it uses less digits than its factorization.

6634398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219.

The product of its digits is 93312, while the sum is 39.

The square root of 6634398 is about 2575.7325171687. The cubic root of 6634398 is about 187.9030547403.

Subtracting 6634398 from its reverse (8934366), we obtain a cube (2299968 = 132³).

The spelling of 6634398 in words is "six million, six hundred thirty-four thousand, three hundred ninety-eight".