1655961 has 8 divisors (see below), whose sum is σ = 2214144. Its totient is φ = 1100880.

The previous prime is 1655959. The next prime is 1655963. The reversal of 1655961 is 1695561.

It is an interprime number because it is at equal distance from previous prime (1655959) and next prime (1655963).

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

It is not a de Polignac number, because 1655961 - 2¹ = 1655959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1655963) 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, 1176 + ... + 2166.

It is an arithmetic number, because the mean of its divisors is an integer number (276768).

2^1655961 is an apocalyptic number.

It is an amenable number.

1655961 is a deficient number, since it is larger than the sum of its proper divisors (558183).

1655961 is an equidigital number, since it uses as much as digits as its factorization.

1655961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551.

The product of its digits is 8100, while the sum is 33.

The square root of 1655961 is about 1286.8414820793. The cubic root of 1655961 is about 118.3087052275.

The spelling of 1655961 in words is "one million, six hundred fifty-five thousand, nine hundred sixty-one".