6620695516 has 12 divisors (see below), whose sum is σ = 11605959288. Its totient is φ = 3304707152.

The previous prime is 6620695489. The next prime is 6620695531. The reversal of 6620695516 is 6155960266.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1407511 + ... + 1412206.

It is an arithmetic number, because the mean of its divisors is an integer number (967163274).

Almost surely, 2^6620695516 is an apocalyptic number.

It is an amenable number.

6620695516 is a deficient number, since it is larger than the sum of its proper divisors (4985263772).

6620695516 is a wasteful number, since it uses less digits than its factorization.

6620695516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820308 (or 2820306 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 46.

The square root of 6620695516 is about 81367.6564489847. The cubic root of 6620695516 is about 1877.7360249090.

The spelling of 6620695516 in words is "six billion, six hundred twenty million, six hundred ninety-five thousand, five hundred sixteen".