6215475140 has 48 divisors (see below), whose sum is σ = 14927775744. Its totient is φ = 2129500800.

The previous prime is 6215475131. The next prime is 6215475151. The reversal of 6215475140 is 415745126.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 6215475140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190850 + ... + 221030.

It is an arithmetic number, because the mean of its divisors is an integer number (310995328).

Almost surely, 2^6215475140 is an apocalyptic number.

It is an amenable number.

6215475140 is an abundant number, since it is smaller than the sum of its proper divisors (8712300604).

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

6215475140 is a wasteful number, since it uses less digits than its factorization.

6215475140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31668 (or 31666 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 6215475140 is about 78838.2847352731. The cubic root of 6215475140 is about 1838.6177335179.

The spelling of 6215475140 in words is "six billion, two hundred fifteen million, four hundred seventy-five thousand, one hundred forty".