402606587 has 2 divisors, whose sum is σ = 402606588. Its totient is φ = 402606586.

The previous prime is 402606569. The next prime is 402606629. The reversal of 402606587 is 785606204.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402606587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402606587.

It is not a weakly prime, because it can be changed into another prime (402606187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201303293 + 201303294.

It is an arithmetic number, because the mean of its divisors is an integer number (201303294).

Almost surely, 2^402606587 is an apocalyptic number.

402606587 is a deficient number, since it is larger than the sum of its proper divisors (1).

402606587 is an equidigital number, since it uses as much as digits as its factorization.

402606587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 402606587 is about 20065.0588586229. The cubic root of 402606587 is about 738.4032939169.

The spelling of 402606587 in words is "four hundred two million, six hundred six thousand, five hundred eighty-seven".