402620263 has 2 divisors, whose sum is σ = 402620264. Its totient is φ = 402620262.

The previous prime is 402620227. The next prime is 402620293. The reversal of 402620263 is 362026204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402620263 - 2⁹ = 402619751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402620213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201310131 + 201310132.

It is an arithmetic number, because the mean of its divisors is an integer number (201310132).

Almost surely, 2^402620263 is an apocalyptic number.

402620263 is a deficient number, since it is larger than the sum of its proper divisors (1).

402620263 is an equidigital number, since it uses as much as digits as its factorization.

402620263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 402620263 is about 20065.3996471538. The cubic root of 402620263 is about 738.4116546752.

Adding to 402620263 its reverse (362026204), we get a palindrome (764646467).

The spelling of 402620263 in words is "four hundred two million, six hundred twenty thousand, two hundred sixty-three".