3996706731 has 8 divisors (see below), whose sum is σ = 5333959680. Its totient is φ = 2661962472.

The previous prime is 3996706729. The next prime is 3996706759. The reversal of 3996706731 is 1376076993.

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

It is not a de Polignac number, because 3996706731 - 2¹ = 3996706729 is a prime.

It is a super-2 number, since 2×3996706731² = 31947329387241412722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3996706331) 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, 623451 + ... + 629828.

It is an arithmetic number, because the mean of its divisors is an integer number (666744960).

Almost surely, 2^3996706731 is an apocalyptic number.

3996706731 is a deficient number, since it is larger than the sum of its proper divisors (1337252949).

3996706731 is a wasteful number, since it uses less digits than its factorization.

3996706731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254345.

The product of its (nonzero) digits is 1285956, while the sum is 51.

The square root of 3996706731 is about 63219.5122648063. The cubic root of 3996706731 is about 1586.9652874659.

The spelling of 3996706731 in words is "three billion, nine hundred ninety-six million, seven hundred six thousand, seven hundred thirty-one".