6616511064 has 48 divisors (see below), whose sum is σ = 18087212520. Its totient is φ = 2184888960.

The previous prime is 6616511053. The next prime is 6616511081. The reversal of 6616511064 is 4601156166.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 421717 + ... + 437124.

Almost surely, 2^6616511064 is an apocalyptic number.

It is an amenable number.

6616511064 is an abundant number, since it is smaller than the sum of its proper divisors (11470701456).

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

6616511064 is a wasteful number, since it uses less digits than its factorization.

6616511064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858960 (or 858953 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 6616511064 is about 81341.9391458060. The cubic root of 6616511064 is about 1877.3403488471.

The spelling of 6616511064 in words is "six billion, six hundred sixteen million, five hundred eleven thousand, sixty-four".