6215456 has 48 divisors (see below), whose sum is σ = 13434624. Its totient is φ = 2813184.

The previous prime is 6215453. The next prime is 6215459. The reversal of 6215456 is 6545126.

6215456 = 66² + 67² + ... + 266².

It is an interprime number because it is at equal distance from previous prime (6215453) and next prime (6215459).

It is not an unprimeable number, because it can be changed into a prime (6215453) 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, 27761 + ... + 27983.

It is an arithmetic number, because the mean of its divisors is an integer number (279888).

Almost surely, 2^6215456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6215456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6717312).

6215456 is an abundant number, since it is smaller than the sum of its proper divisors (7219168).

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

6215456 is a wasteful number, since it uses less digits than its factorization.

6215456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 305 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 6215456 is about 2493.0816272236. The cubic root of 6215456 is about 183.8615846230.

The spelling of 6215456 in words is "six million, two hundred fifteen thousand, four hundred fifty-six".