1681101 has 32 divisors (see below), whose sum is σ = 2736000. Its totient is φ = 1016064.

The previous prime is 1681091. The next prime is 1681103. The reversal of 1681101 is 1011861.

1681101 = 10² + 11² + ... + 171².

It is not a de Polignac number, because 1681101 - 2⁹ = 1680589 is a prime.

It is a super-2 number, since 2×1681101² = 5652201144402, which contains 22 as substring.

1681101 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14821 + ... + 14933.

It is an arithmetic number, because the mean of its divisors is an integer number (85500).

2^1681101 is an apocalyptic number.

It is an amenable number.

1681101 is a deficient number, since it is larger than the sum of its proper divisors (1054899).

1681101 is a wasteful number, since it uses less digits than its factorization.

1681101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

The square root of 1681101 is about 1296.5727900893. The cubic root of 1681101 is about 118.9044026623.

Adding to 1681101 its reverse (1011861), we get a palindrome (2692962).

The spelling of 1681101 in words is "one million, six hundred eighty-one thousand, one hundred one".