1190621 has 4 divisors (see below), whose sum is σ = 1194492. Its totient is φ = 1186752.

The previous prime is 1190611. The next prime is 1190633. The reversal of 1190621 is 1260911.

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 657721 + 532900 = 811^2 + 730^2 .

It is a cyclic number.

It is not a de Polignac number, because 1190621 - 2¹⁴ = 1174237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1190593 and 1190602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1190611) 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, 1430 + ... + 2103.

It is an arithmetic number, because the mean of its divisors is an integer number (298623).

2^1190621 is an apocalyptic number.

It is an amenable number.

1190621 is a deficient number, since it is larger than the sum of its proper divisors (3871).

1190621 is an equidigital number, since it uses as much as digits as its factorization.

1190621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3870.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1190621 is about 1091.1558092225. The cubic root of 1190621 is about 105.9882804178.

The spelling of 1190621 in words is "one million, one hundred ninety thousand, six hundred twenty-one".