6624861 has 8 divisors (see below), whose sum is σ = 8945280. Its totient is φ = 4360512.

The previous prime is 6624859. The next prime is 6624899. The reversal of 6624861 is 1684266.

It is a happy number.

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

It is not a de Polignac number, because 6624861 - 2¹ = 6624859 is a prime.

6624861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6624061) 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, 13740 + ... + 14213.

It is an arithmetic number, because the mean of its divisors is an integer number (1118160).

Almost surely, 2^6624861 is an apocalyptic number.

It is an amenable number.

6624861 is a deficient number, since it is larger than the sum of its proper divisors (2320419).

6624861 is a wasteful number, since it uses less digits than its factorization.

6624861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28035.

The product of its digits is 13824, while the sum is 33.

The square root of 6624861 is about 2573.8805333581. The cubic root of 6624861 is about 187.8129741831.

The spelling of 6624861 in words is "six million, six hundred twenty-four thousand, eight hundred sixty-one".