403075681 has 2 divisors, whose sum is σ = 403075682. Its totient is φ = 403075680.

The previous prime is 403075663. The next prime is 403075693. The reversal of 403075681 is 186570304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272910400 + 130165281 = 16520^2 + 11409^2 .

It is a cyclic number.

It is not a de Polignac number, because 403075681 - 2⁵ = 403075649 is a prime.

It is a super-2 number, since 2×403075681² = 324940009227227522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (403073681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201537840 + 201537841.

It is an arithmetic number, because the mean of its divisors is an integer number (201537841).

Almost surely, 2^403075681 is an apocalyptic number.

It is an amenable number.

403075681 is a deficient number, since it is larger than the sum of its proper divisors (1).

403075681 is an equidigital number, since it uses as much as digits as its factorization.

403075681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 403075681 is about 20076.7447809649. The cubic root of 403075681 is about 738.6899642674.

The spelling of 403075681 in words is "four hundred three million, seventy-five thousand, six hundred eighty-one".