6428615 has 8 divisors (see below), whose sum is σ = 8049888. Its totient is φ = 4919200.

The previous prime is 6428573. The next prime is 6428623. The reversal of 6428615 is 5168246.

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

It is not a de Polignac number, because 6428615 - 2⁶ = 6428551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27836 + ... + 28065.

It is an arithmetic number, because the mean of its divisors is an integer number (1006236).

Almost surely, 2^6428615 is an apocalyptic number.

6428615 is a deficient number, since it is larger than the sum of its proper divisors (1621273).

6428615 is a wasteful number, since it uses less digits than its factorization.

6428615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55929.

The product of its digits is 11520, while the sum is 32.

The square root of 6428615 is about 2535.4713565726. The cubic root of 6428615 is about 185.9398483568.

The spelling of 6428615 in words is "six million, four hundred twenty-eight thousand, six hundred fifteen".