2373661 has 4 divisors (see below), whose sum is σ = 2437852. Its totient is φ = 2309472.

The previous prime is 2373649. The next prime is 2373667. The reversal of 2373661 is 1663732.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2268036 + 105625 = 1506^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 2373661 - 2⁷ = 2373533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2373667) 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, 32040 + ... + 32113.

It is an arithmetic number, because the mean of its divisors is an integer number (609463).

2^2373661 is an apocalyptic number.

It is an amenable number.

2373661 is a deficient number, since it is larger than the sum of its proper divisors (64191).

2373661 is an equidigital number, since it uses as much as digits as its factorization.

2373661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64190.

The product of its digits is 4536, while the sum is 28.

The square root of 2373661 is about 1540.6690105276. The cubic root of 2373661 is about 133.3950041099.

The spelling of 2373661 in words is "two million, three hundred seventy-three thousand, six hundred sixty-one".