1968655 has 16 divisors (see below), whose sum is σ = 2628864. Its totient is φ = 1405440.

The previous prime is 1968641. The next prime is 1968679. The reversal of 1968655 is 5568691.

1968655 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 1968655 - 2¹¹ = 1966607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1527 + ... + 2503.

It is an arithmetic number, because the mean of its divisors is an integer number (164304).

2^1968655 is an apocalyptic number.

1968655 is a deficient number, since it is larger than the sum of its proper divisors (660209).

1968655 is a wasteful number, since it uses less digits than its factorization.

1968655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026.

The product of its digits is 64800, while the sum is 40.

The square root of 1968655 is about 1403.0876665412. The cubic root of 1968655 is about 125.3304324124.

The spelling of 1968655 in words is "one million, nine hundred sixty-eight thousand, six hundred fifty-five".