2077864 has 8 divisors (see below), whose sum is σ = 3896010. Its totient is φ = 1038928.

The previous prime is 2077861. The next prime is 2077891. The reversal of 2077864 is 4687702.

It can be written as a sum of positive squares in only one way, i.e., 1368900 + 708964 = 1170^2 + 842^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2077861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129859 + ... + 129874.

2^2077864 is an apocalyptic number.

It is an amenable number.

2077864 is a deficient number, since it is larger than the sum of its proper divisors (1818146).

2077864 is a wasteful number, since it uses less digits than its factorization.

2077864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259739 (or 259735 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 2077864 is about 1441.4797952105. The cubic root of 2077864 is about 127.6063754050.

The spelling of 2077864 in words is "two million, seventy-seven thousand, eight hundred sixty-four".