2661964 has 12 divisors (see below), whose sum is σ = 4670064. Its totient is φ = 1327664.

The previous prime is 2661961. The next prime is 2661991. The reversal of 2661964 is 4691662.

It is not an unprimeable number, because it can be changed into a prime (2661961) 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, 2217 + ... + 3199.

It is an arithmetic number, because the mean of its divisors is an integer number (389172).

2^2661964 is an apocalyptic number.

It is an amenable number.

2661964 is a deficient number, since it is larger than the sum of its proper divisors (2008100).

2661964 is a wasteful number, since it uses less digits than its factorization.

2661964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664 (or 1662 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 2661964 is about 1631.5526347624. The cubic root of 2661964 is about 138.5906907314.

The spelling of 2661964 in words is "two million, six hundred sixty-one thousand, nine hundred sixty-four".