4006731 has 8 divisors (see below), whose sum is σ = 5391760. Its totient is φ = 2646432.

The previous prime is 4006729. The next prime is 4006741. The reversal of 4006731 is 1376004.

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

It is not a de Polignac number, because 4006731 - 2¹ = 4006729 is a prime.

It is a super-2 number, since 2×4006731² = 32107786612722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4006698 and 4006707.

It is not an unprimeable number, because it can be changed into a prime (4006721) 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, 5800 + ... + 6453.

It is an arithmetic number, because the mean of its divisors is an integer number (673970).

Almost surely, 2^4006731 is an apocalyptic number.

4006731 is a deficient number, since it is larger than the sum of its proper divisors (1385029).

4006731 is a wasteful number, since it uses less digits than its factorization.

4006731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12365.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 4006731 is about 2001.6820426831. The cubic root of 4006731 is about 158.8290952701.

The spelling of 4006731 in words is "four million, six thousand, seven hundred thirty-one".