2100747 has 8 divisors (see below), whose sum is σ = 3055680. Its totient is φ = 1273160.

The previous prime is 2100743. The next prime is 2100781. The reversal of 2100747 is 7470012.

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

It is a cyclic number.

It is not a de Polignac number, because 2100747 - 2² = 2100743 is a prime.

2100747 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2100743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31797 + ... + 31862.

It is an arithmetic number, because the mean of its divisors is an integer number (381960).

2^2100747 is an apocalyptic number.

2100747 is a deficient number, since it is larger than the sum of its proper divisors (954933).

2100747 is a wasteful number, since it uses less digits than its factorization.

2100747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63673.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 2100747 is about 1449.3953911890. The cubic root of 2100747 is about 128.0730987088.

Adding to 2100747 its reverse (7470012), we get a palindrome (9570759).

The spelling of 2100747 in words is "two million, one hundred thousand, seven hundred forty-seven".