2006457637 has 4 divisors (see below), whose sum is σ = 2009559456. Its totient is φ = 2003355820.

The previous prime is 2006457619. The next prime is 2006457641. The reversal of 2006457637 is 7367546002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2006457637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2006457637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006457667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1549939 + ... + 1551232.

It is an arithmetic number, because the mean of its divisors is an integer number (502389864).

Almost surely, 2^2006457637 is an apocalyptic number.

It is an amenable number.

2006457637 is a deficient number, since it is larger than the sum of its proper divisors (3101819).

2006457637 is an equidigital number, since it uses as much as digits as its factorization.

2006457637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101818.

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 2006457637 is about 44793.4999413977. The cubic root of 2006457637 is about 1261.2756118591.

The spelling of 2006457637 in words is "two billion, six million, four hundred fifty-seven thousand, six hundred thirty-seven".