2061663 has 8 divisors (see below), whose sum is σ = 2784000. Its totient is φ = 1356888.

The previous prime is 2061649. The next prime is 2061667. The reversal of 2061663 is 3661602.

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

It is not a de Polignac number, because 2061663 - 2⁶ = 2061599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061667) 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, 4113 + ... + 4586.

It is an arithmetic number, because the mean of its divisors is an integer number (348000).

2^2061663 is an apocalyptic number.

2061663 is a deficient number, since it is larger than the sum of its proper divisors (722337).

2061663 is an equidigital number, since it uses as much as digits as its factorization.

2061663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8781.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 2061663 is about 1435.8492260680. The cubic root of 2061663 is about 127.2738628996.

The spelling of 2061663 in words is "two million, sixty-one thousand, six hundred sixty-three".