2016761 has 4 divisors (see below), whose sum is σ = 2135412. Its totient is φ = 1898112.

The previous prime is 2016739. The next prime is 2016787. The reversal of 2016761 is 1676102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1547536 + 469225 = 1244^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 2016761 - 2⁶ = 2016697 is a prime.

It is a super-2 number, since 2×2016761² = 8134649862242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2016361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59300 + ... + 59333.

It is an arithmetic number, because the mean of its divisors is an integer number (533853).

2^2016761 is an apocalyptic number.

It is an amenable number.

2016761 is a deficient number, since it is larger than the sum of its proper divisors (118651).

2016761 is a wasteful number, since it uses less digits than its factorization.

2016761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118650.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2016761 is about 1420.1271069873. The cubic root of 2016761 is about 126.3430852896.

The spelling of 2016761 in words is "two million, sixteen thousand, seven hundred sixty-one".