2086777664 has 14 divisors (see below), whose sum is σ = 4140949554. Its totient is φ = 1043388800.

The previous prime is 2086777643. The next prime is 2086777673. The reversal of 2086777664 is 4667776802.

It can be written as a sum of positive squares in only one way, i.e., 1126273600 + 960504064 = 33560^2 + 30992^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16302887 + ... + 16303014.

It is an arithmetic number, because the mean of its divisors is an integer number (295782111).

Almost surely, 2^2086777664 is an apocalyptic number.

It is an amenable number.

2086777664 is a deficient number, since it is larger than the sum of its proper divisors (2054171890).

2086777664 is an equidigital number, since it uses as much as digits as its factorization.

2086777664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32605913 (or 32605903 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 53.

The square root of 2086777664 is about 45681.2616288123. The cubic root of 2086777664 is about 1277.8858459480.

The spelling of 2086777664 in words is "two billion, eighty-six million, seven hundred seventy-seven thousand, six hundred sixty-four".