406782611 has 2 divisors, whose sum is σ = 406782612. Its totient is φ = 406782610.

The previous prime is 406782583. The next prime is 406782617. The reversal of 406782611 is 116287604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406782611 - 2¹⁰ = 406781587 is a prime.

It is a super-2 number, since 2×406782611² = 330944185223954642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (406782617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203391305 + 203391306.

It is an arithmetic number, because the mean of its divisors is an integer number (203391306).

Almost surely, 2^406782611 is an apocalyptic number.

406782611 is a deficient number, since it is larger than the sum of its proper divisors (1).

406782611 is an equidigital number, since it uses as much as digits as its factorization.

406782611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 406782611 is about 20168.8524958660. The cubic root of 406782611 is about 740.9475389375.

The spelling of 406782611 in words is "four hundred six million, seven hundred eighty-two thousand, six hundred eleven".