2006398726 has 4 divisors (see below), whose sum is σ = 3009598092. Its totient is φ = 1003199362.

The previous prime is 2006398717. The next prime is 2006398753. The reversal of 2006398726 is 6278936002.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501599680 + ... + 501599683.

It is an arithmetic number, because the mean of its divisors is an integer number (752399523).

Almost surely, 2^2006398726 is an apocalyptic number.

2006398726 is a deficient number, since it is larger than the sum of its proper divisors (1003199366).

2006398726 is a wasteful number, since it uses less digits than its factorization.

2006398726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003199365.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 2006398726 is about 44792.8423523223. The cubic root of 2006398726 is about 1261.2632677602.

The spelling of 2006398726 in words is "two billion, six million, three hundred ninety-eight thousand, seven hundred twenty-six".