1960666 has 8 divisors (see below), whose sum is σ = 2950740. Its totient is φ = 977088.

The previous prime is 1960649. The next prime is 1960669. The reversal of 1960666 is 6660691.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1946025 + 14641 = 1395^2 + 121^2 .

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

It is a super-2 number, since 2×1960666² = 7688422327112, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1960669) 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, 781 + ... + 2128.

2^1960666 is an apocalyptic number.

1960666 is a deficient number, since it is larger than the sum of its proper divisors (990074).

1960666 is a wasteful number, since it uses less digits than its factorization.

1960666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 1960666 is about 1400.2378369406. The cubic root of 1960666 is about 125.1606680644.

The spelling of 1960666 in words is "one million, nine hundred sixty thousand, six hundred sixty-six".