6613725612 has 48 divisors (see below), whose sum is σ = 16658933760. Its totient is φ = 2030115648.

The previous prime is 6613725607. The next prime is 6613725619. The reversal of 6613725612 is 2165273166.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (6613725619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14773 + ... + 115955.

It is an arithmetic number, because the mean of its divisors is an integer number (347061120).

Almost surely, 2^6613725612 is an apocalyptic number.

It is an amenable number.

6613725612 is an abundant number, since it is smaller than the sum of its proper divisors (10045208148).

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

6613725612 is a wasteful number, since it uses less digits than its factorization.

6613725612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101622 (or 101620 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 6613725612 is about 81324.8154747369. The cubic root of 6613725612 is about 1877.0768678191.

Adding to 6613725612 its reverse (2165273166), we get a palindrome (8778998778).

It can be divided in two parts, 661 and 3725612, that added together give a palindrome (3726273).

The spelling of 6613725612 in words is "six billion, six hundred thirteen million, seven hundred twenty-five thousand, six hundred twelve".