402697 has 2 divisors, whose sum is σ = 402698. Its totient is φ = 402696.

The previous prime is 402691. The next prime is 402739. The reversal of 402697 is 796204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395641 + 7056 = 629^2 + 84^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402697 is a prime.

It is not a weakly prime, because it can be changed into another prime (402691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201348 + 201349.

It is an arithmetic number, because the mean of its divisors is an integer number (201349).

2⁴⁰²⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

402697 is a deficient number, since it is larger than the sum of its proper divisors (1).

402697 is an equidigital number, since it uses as much as digits as its factorization.

402697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 402697 is about 634.5841157798. The cubic root of 402697 is about 73.8458563968.

It can be divided in two parts, 40 and 2697, that multiplied together give a triangular number (107880 = T₄₆₄).

The spelling of 402697 in words is "four hundred two thousand, six hundred ninety-seven".