1966610 has 8 divisors (see below), whose sum is σ = 3539916. Its totient is φ = 786640.

The previous prime is 1966607. The next prime is 1966619. The reversal of 1966610 is 166691.

It can be written as a sum of positive squares in 2 ways, for example, as 1957201 + 9409 = 1399^2 + 97^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1966619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98321 + ... + 98340.

2^1966610 is an apocalyptic number.

1966610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1966610 is a deficient number, since it is larger than the sum of its proper divisors (1573306).

1966610 is a wasteful number, since it uses less digits than its factorization.

1966610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196668.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1966610 is about 1402.3587272877. The cubic root of 1966610 is about 125.2870204497.

The spelling of 1966610 in words is "one million, nine hundred sixty-six thousand, six hundred ten".