6842624 has 18 divisors (see below), whose sum is σ = 13659030. Its totient is φ = 3421184.

The previous prime is 6842621. The next prime is 6842629. The reversal of 6842624 is 4262486.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6150400 + 692224 = 2480^2 + 832^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6842621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13109 + ... + 13620.

It is an arithmetic number, because the mean of its divisors is an integer number (758835).

Almost surely, 2^6842624 is an apocalyptic number.

6842624 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6842624 is a deficient number, since it is larger than the sum of its proper divisors (6816406).

6842624 is an equidigital number, since it uses as much as digits as its factorization.

6842624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26745 (or 26731 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The square root of 6842624 is about 2615.8409737597. The cubic root of 6842624 is about 189.8486698985.

The spelling of 6842624 in words is "six million, eight hundred forty-two thousand, six hundred twenty-four".