6961666 has 4 divisors (see below), whose sum is σ = 10442502. Its totient is φ = 3480832.

The previous prime is 6961649. The next prime is 6961673. The reversal of 6961666 is 6661696.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 4774225 + 2187441 = 2185^2 + 1479^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1740415 + ... + 1740418.

Almost surely, 2^6961666 is an apocalyptic number.

6961666 is a deficient number, since it is larger than the sum of its proper divisors (3480836).

6961666 is a wasteful number, since it uses less digits than its factorization.

6961666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480835.

The product of its digits is 69984, while the sum is 40.

The square root of 6961666 is about 2638.4969205970. The cubic root of 6961666 is about 190.9432869823.

The spelling of 6961666 in words is "six million, nine hundred sixty-one thousand, six hundred sixty-six".