2006757745 has 4 divisors (see below), whose sum is σ = 2408109300. Its totient is φ = 1605406192.

The previous prime is 2006757719. The next prime is 2006757773. The reversal of 2006757745 is 5477576002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 476461584 + 1530296161 = 21828^2 + 39119^2 .

It is a cyclic number.

It is not a de Polignac number, because 2006757745 - 2⁷ = 2006757617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200675770 + ... + 200675779.

It is an arithmetic number, because the mean of its divisors is an integer number (602027325).

Almost surely, 2^2006757745 is an apocalyptic number.

It is an amenable number.

2006757745 is a deficient number, since it is larger than the sum of its proper divisors (401351555).

2006757745 is an equidigital number, since it uses as much as digits as its factorization.

2006757745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401351554.

The product of its (nonzero) digits is 411600, while the sum is 43.

The square root of 2006757745 is about 44796.8497218275. The cubic root of 2006757745 is about 1261.3384921685.

The spelling of 2006757745 in words is "two billion, six million, seven hundred fifty-seven thousand, seven hundred forty-five".