6215440602 has 64 divisors (see below), whose sum is σ = 14753249280. Its totient is φ = 1707996864.

The previous prime is 6215440559. The next prime is 6215440639. The reversal of 6215440602 is 2060445126.

It is a self number, because there is not a number n which added to its sum of digits gives 6215440602.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 310633 + ... + 330035.

It is an arithmetic number, because the mean of its divisors is an integer number (230519520).

Almost surely, 2^6215440602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6215440602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7376624640).

6215440602 is an abundant number, since it is smaller than the sum of its proper divisors (8537808678).

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

6215440602 is a wasteful number, since it uses less digits than its factorization.

6215440602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19707.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 6215440602 is about 78838.0656916442. The cubic root of 6215440602 is about 1838.6143279162.

Adding to 6215440602 its reverse (2060445126), we get a palindrome (8275885728).

The spelling of 6215440602 in words is "six billion, two hundred fifteen million, four hundred forty thousand, six hundred two".