1988061 has 8 divisors (see below), whose sum is σ = 2736384. Its totient is φ = 1282560.

The previous prime is 1988057. The next prime is 1988087. The reversal of 1988061 is 1608891.

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

It is not a de Polignac number, because 1988061 - 2² = 1988057 is a prime.

1988061 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988011) 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, 10596 + ... + 10781.

It is an arithmetic number, because the mean of its divisors is an integer number (342048).

2^1988061 is an apocalyptic number.

It is an amenable number.

1988061 is a deficient number, since it is larger than the sum of its proper divisors (748323).

1988061 is a wasteful number, since it uses less digits than its factorization.

1988061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21411.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 1988061 is about 1409.9861701449. The cubic root of 1988061 is about 125.7409011805.

The spelling of 1988061 in words is "one million, nine hundred eighty-eight thousand, sixty-one".