2661642 has 24 divisors (see below), whose sum is σ = 5855616. Its totient is φ = 873576.

The previous prime is 2661641. The next prime is 2661643. The reversal of 2661642 is 2461662.

It is a happy number.

2661642 is a `hidden beast` number, since 2 + 6 + 616 + 42 = 666.

It is an interprime number because it is at equal distance from previous prime (2661641) and next prime (2661643).

It is not an unprimeable number, because it can be changed into a prime (2661641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103 + ... + 2309.

It is an arithmetic number, because the mean of its divisors is an integer number (243984).

2^2661642 is an apocalyptic number.

2661642 is an abundant number, since it is smaller than the sum of its proper divisors (3193974).

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

2661642 is a wasteful number, since it uses less digits than its factorization.

2661642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2282 (or 2279 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 2661642 is about 1631.4539527673. The cubic root of 2661642 is about 138.5851023761.

The spelling of 2661642 in words is "two million, six hundred sixty-one thousand, six hundred forty-two".