1006506731 has 2 divisors, whose sum is σ = 1006506732. Its totient is φ = 1006506730.

The previous prime is 1006506679. The next prime is 1006506821. The reversal of 1006506731 is 1376056001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1006506731 is a prime.

It is a super-2 number, since 2×1006506731² = 2026111599096612722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1006506694 and 1006506703.

It is not a weakly prime, because it can be changed into another prime (1006506331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503253365 + 503253366.

It is an arithmetic number, because the mean of its divisors is an integer number (503253366).

Almost surely, 2^1006506731 is an apocalyptic number.

1006506731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006506731 is an equidigital number, since it uses as much as digits as its factorization.

1006506731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 1006506731 is about 31725.4902404990. The cubic root of 1006506731 is about 1002.1642230928.

The spelling of 1006506731 in words is "one billion, six million, five hundred six thousand, seven hundred thirty-one".