2016677765 has 12 divisors (see below), whose sum is σ = 2554088364. Its totient is φ = 1528428096.

The previous prime is 2016677753. The next prime is 2016677801. The reversal of 2016677765 is 5677766102.

It can be written as a sum of positive squares in 2 ways, for example, as 1464286756 + 552391009 = 38266^2 + 23503^2 .

It is not a de Polignac number, because 2016677765 - 2²⁴ = 1999900549 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

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, 556832 + ... + 560441.

It is an arithmetic number, because the mean of its divisors is an integer number (212840697).

Almost surely, 2^2016677765 is an apocalyptic number.

It is an amenable number.

2016677765 is a deficient number, since it is larger than the sum of its proper divisors (537410599).

2016677765 is a wasteful number, since it uses less digits than its factorization.

2016677765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117316 (or 1117297 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 47.

The square root of 2016677765 is about 44907.4355201897. The cubic root of 2016677765 is about 1263.4134713766.

The spelling of 2016677765 in words is "two billion, sixteen million, six hundred seventy-seven thousand, seven hundred sixty-five".