2069864 has 8 divisors (see below), whose sum is σ = 3881010. Its totient is φ = 1034928.

The previous prime is 2069861. The next prime is 2069887. The reversal of 2069864 is 4689602.

It can be written as a sum of positive squares in only one way, i.e., 2044900 + 24964 = 1430^2 + 158^2 .

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 (2069861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129359 + ... + 129374.

2^2069864 is an apocalyptic number.

It is an amenable number.

2069864 is a deficient number, since it is larger than the sum of its proper divisors (1811146).

2069864 is a wasteful number, since it uses less digits than its factorization.

2069864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258739 (or 258735 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 2069864 is about 1438.7021929503. The cubic root of 2069864 is about 127.4423986895.

The spelling of 2069864 in words is "two million, sixty-nine thousand, eight hundred sixty-four".