2475661 has 4 divisors (see below), whose sum is σ = 2481472. Its totient is φ = 2469852.

The previous prime is 2475653. The next prime is 2475673. The reversal of 2475661 is 1665742.

It is a happy number.

2475661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2475661 - 2³ = 2475653 is a prime.

It is a super-2 number, since 2×2475661² = 12257794773842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2475061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2211 + ... + 3136.

It is an arithmetic number, because the mean of its divisors is an integer number (620368).

2^2475661 is an apocalyptic number.

It is an amenable number.

2475661 is a deficient number, since it is larger than the sum of its proper divisors (5811).

2475661 is an equidigital number, since it uses as much as digits as its factorization.

2475661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5810.

The product of its digits is 10080, while the sum is 31.

The square root of 2475661 is about 1573.4233378211. The cubic root of 2475661 is about 135.2790023256.

It can be divided in two parts, 2475 and 661, that added together give a square (3136 = 56²).

The spelling of 2475661 in words is "two million, four hundred seventy-five thousand, six hundred sixty-one".