2069664 has 24 divisors (see below), whose sum is σ = 5433120. Its totient is φ = 689856.

The previous prime is 2069657. The next prime is 2069671. The reversal of 2069664 is 4669602.

It is an interprime number because it is at equal distance from previous prime (2069657) and next prime (2069671).

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10684 + ... + 10875.

It is an arithmetic number, because the mean of its divisors is an integer number (226380).

2^2069664 is an apocalyptic number.

2069664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2069664 is an abundant number, since it is smaller than the sum of its proper divisors (3363456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2069664 is a wasteful number, since it uses less digits than its factorization.

2069664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21572 (or 21564 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 2069664 is about 1438.6326841831. The cubic root of 2069664 is about 127.4382938626.

It can be divided in two parts, 206 and 9664, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 2069664 in words is "two million, sixty-nine thousand, six hundred sixty-four".