1761961 has 4 divisors (see below), whose sum is σ = 1838592. Its totient is φ = 1685332.

The previous prime is 1761959. The next prime is 1761973. The reversal of 1761961 is 1691671.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1691671 = 47 ⋅35993.

It is a cyclic number.

It is not a de Polignac number, because 1761961 - 2¹ = 1761959 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1761901) 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, 38281 + ... + 38326.

It is an arithmetic number, because the mean of its divisors is an integer number (459648).

2^1761961 is an apocalyptic number.

It is an amenable number.

1761961 is a deficient number, since it is larger than the sum of its proper divisors (76631).

1761961 is an equidigital number, since it uses as much as digits as its factorization.

1761961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76630.

The product of its digits is 2268, while the sum is 31.

The square root of 1761961 is about 1327.3887900687. The cubic root of 1761961 is about 120.7810397051.

The spelling of 1761961 in words is "one million, seven hundred sixty-one thousand, nine hundred sixty-one".