2661741 has 20 divisors (see below), whose sum is σ = 4212252. Its totient is φ = 1669248.

The previous prime is 2661739. The next prime is 2661779. The reversal of 2661741 is 1471662.

2661741 is a `hidden beast` number, since 2 + 6 + 617 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1946025 + 715716 = 1395^2 + 846^2 .

It is not a de Polignac number, because 2661741 - 2¹ = 2661739 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661731) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 411 + ... + 2343.

2^2661741 is an apocalyptic number.

It is an amenable number.

2661741 is a deficient number, since it is larger than the sum of its proper divisors (1550511).

2661741 is a wasteful number, since it uses less digits than its factorization.

2661741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962 (or 1953 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 2661741 is about 1631.4842935192. The cubic root of 2661741 is about 138.5868205830.

The spelling of 2661741 in words is "two million, six hundred sixty-one thousand, seven hundred forty-one".