402705613 has 2 divisors, whose sum is σ = 402705614. Its totient is φ = 402705612.

The previous prime is 402705599. The next prime is 402705617. The reversal of 402705613 is 316507204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 362026729 + 40678884 = 19027^2 + 6378^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402705613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402705617) 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, 201352806 + 201352807.

It is an arithmetic number, because the mean of its divisors is an integer number (201352807).

Almost surely, 2^402705613 is an apocalyptic number.

It is an amenable number.

402705613 is a deficient number, since it is larger than the sum of its proper divisors (1).

402705613 is an equidigital number, since it uses as much as digits as its factorization.

402705613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 402705613 is about 20067.5263298694. The cubic root of 402705613 is about 738.4638287191.

The spelling of 402705613 in words is "four hundred two million, seven hundred five thousand, six hundred thirteen".