665000616 has 32 divisors (see below), whose sum is σ = 1900002240. Its totient is φ = 190000128.

The previous prime is 665000599. The next prime is 665000617. The reversal of 665000616 is 616000566.

It is not an unprimeable number, because it can be changed into a prime (665000617) 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, 1979001 + ... + 1979336.

It is an arithmetic number, because the mean of its divisors is an integer number (59375070).

Almost surely, 2^665000616 is an apocalyptic number.

It is an amenable number.

665000616 is an abundant number, since it is smaller than the sum of its proper divisors (1235001624).

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

665000616 is a wasteful number, since it uses less digits than its factorization.

665000616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3958353 (or 3958349 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 665000616 is about 25787.6058601802. The cubic root of 665000616 is about 872.8521430307.

Subtracting from 665000616 its reverse (616000566), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 665000616 in words is "six hundred sixty-five million, six hundred sixteen", and thus it is an aban number.