1961686 has 16 divisors (see below), whose sum is σ = 3084480. Its totient is φ = 934720.

The previous prime is 1961683. The next prime is 1961737. The reversal of 1961686 is 6861691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3600 + ... + 4108.

It is an arithmetic number, because the mean of its divisors is an integer number (192780).

2^1961686 is an apocalyptic number.

1961686 is a deficient number, since it is larger than the sum of its proper divisors (1122794).

1961686 is a wasteful number, since it uses less digits than its factorization.

1961686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599.

The product of its digits is 15552, while the sum is 37.

The square root of 1961686 is about 1400.6020134214. The cubic root of 1961686 is about 125.1823684712.

The spelling of 1961686 in words is "one million, nine hundred sixty-one thousand, six hundred eighty-six".