2061766616 has 32 divisors (see below), whose sum is σ = 4757924640. Its totient is φ = 815643648.

The previous prime is 2061766607. The next prime is 2061766643. The reversal of 2061766616 is 6166671602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1415321 + ... + 1416776.

It is an arithmetic number, because the mean of its divisors is an integer number (148685145).

Almost surely, 2^2061766616 is an apocalyptic number.

2061766616 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2061766616 is an abundant number, since it is smaller than the sum of its proper divisors (2696158024).

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

2061766616 is a wasteful number, since it uses less digits than its factorization.

2061766616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832123 (or 2832119 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 2061766616 is about 45406.6803014711. The cubic root of 2061766616 is about 1272.7599505982.

The spelling of 2061766616 in words is "two billion, sixty-one million, seven hundred sixty-six thousand, six hundred sixteen".