6438501 has 8 divisors (see below), whose sum is σ = 9538560. Its totient is φ = 4292316.

The previous prime is 6438463. The next prime is 6438539. The reversal of 6438501 is 1058346.

It is an interprime number because it is at equal distance from previous prime (6438463) and next prime (6438539).

It is not a de Polignac number, because 6438501 - 2⁶ = 6438437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 238463 = 6438501 / (6 + 4 + 3 + 8 + 5 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6438571) 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, 119205 + ... + 119258.

It is an arithmetic number, because the mean of its divisors is an integer number (1192320).

Almost surely, 2^6438501 is an apocalyptic number.

It is an amenable number.

6438501 is a deficient number, since it is larger than the sum of its proper divisors (3100059).

6438501 is a wasteful number, since it uses less digits than its factorization.

6438501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238472 (or 238466 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 6438501 is about 2537.4201465268. The cubic root of 6438501 is about 186.0351130380.

The spelling of 6438501 in words is "six million, four hundred thirty-eight thousand, five hundred one".