2661930 has 32 divisors (see below), whose sum is σ = 7099200. Its totient is φ = 709776.

The previous prime is 2661929. The next prime is 2661931. The reversal of 2661930 is 391662.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2661929) and next prime (2661931).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2661894 and 2661903.

It is not an unprimeable number, because it can be changed into a prime (2661931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4660 + ... + 5199.

It is an arithmetic number, because the mean of its divisors is an integer number (221850).

2^2661930 is an apocalyptic number.

2661930 is an abundant number, since it is smaller than the sum of its proper divisors (4437270).

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

2661930 is a wasteful number, since it uses less digits than its factorization.

2661930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9875 (or 9869 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 2661930 is about 1631.5422152062. The cubic root of 2661930 is about 138.5901006779.

The spelling of 2661930 in words is "two million, six hundred sixty-one thousand, nine hundred thirty".