2077645 has 8 divisors (see below), whose sum is σ = 2507256. Its totient is φ = 1652736.

The previous prime is 2077639. The next prime is 2077667. The reversal of 2077645 is 5467702.

It can be written as a sum of positive squares in 4 ways, for example, as 9801 + 2067844 = 99^2 + 1438^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2077645 - 2³ = 2077637 is a prime.

It is a super-3 number, since 3×2077645³ = 26905141734405333375, which contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 112 + ... + 2041.

It is an arithmetic number, because the mean of its divisors is an integer number (313407).

2^2077645 is an apocalyptic number.

It is an amenable number.

2077645 is a deficient number, since it is larger than the sum of its proper divisors (429611).

2077645 is a wasteful number, since it uses less digits than its factorization.

2077645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 2077645 is about 1441.4038296050. The cubic root of 2077645 is about 127.6018921507.

The spelling of 2077645 in words is "two million, seventy-seven thousand, six hundred forty-five".